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J Psychiatr Res. Author manuscript; available in PMC 2014 April 1.
Published in final edited form as:
PMCID: PMC3668329
NIHMSID: NIHMS475518

Problem gambling severity and the incidence of Axis I psychopathology among older adults in the general population

Corey E. Pilver, Ph.D., Daniel J. Libby, Ph.D., Rani A. Hoff, Ph.D., and Marc N. Potenza, M.D., Ph.D.

Abstract

To examine the longitudinal relationship between past-year problem-gambling severity and incident Axis I psychopathology among older adults (aged 55 to 90), analyses were conducted on data from the National Epidemiologic Study of Alcohol and Related Conditions (NESARC). This nationally-representative population-based survey was conducted in two waves (Wave 1, 2000-2001; and Wave 2, 2004-2005). Past-year problem-gambling severity at Wave 1 and incident Axis I psychopathology at Wave 2 were evaluated with the Alcohol Use Disorder and Associated Disabilities Interview Schedule—Diagnostic and Statistical Manual of Mental Disorders—Fourth Edition. Multivariate logistic regression modeling was conducted on groups categorized into low-frequency gambling/non-gambling (LFG/NG), low-risk gambling (LRG), and at-risk/problem/pathological gambling (ARPG) based on DSM-IV criteria for pathological gambling. Relative to LFG/NG, ARPG at Wave 1 was positively associated with the incidence of generalized anxiety disorder (OR=2.51; p=.011) and any substance use disorder (OR=2.61; p=.0036); LRG was negatively associated with the incidence of hypomania (OR=0.33; p=.017). Models were adjusted for demographic characteristics, psychiatric comorbidity, health behaviors, physical health, and stressful life events assessed at baseline. While gambling may represent a positive activity for some older adults, data suggest that risky/problematic gambling behavior may be associated with the development of psychiatric problems in this population. Older-adult gamblers, as well as their clinicians, friends, and family, should be aware of potential risks associated with gambling, adopt strategies to prevent the onset of secondary disorders, and monitor themselves and others for signs of problems.

Keywords: pathological gambling, older adults, mental health, incidence, epidemiology, substance abuse

Introduction

Older adults are anticipated to comprise a greater proportion of the population over the next several decades (Shrestha & Heisler, 2009). Given this demographic trend and the increases in anticipated life expectancies (Harper, Rushani, & Kaufman, 2012), research to promote ‘successful aging’ has become increasingly important. Successful aging has been defined by the avoidance of disease and disability, the maintenance of cognitive and physical functioning, and participation in social and productive activities (Rowe & Kahn, 1997). Gambling may promote successful aging in older adults by forging and maintaining social ties or represent a cognitively-demanding activity. Correspondingly, older adults who gamble recreationally have reported greater well-being relative to non-gamblers (Desai, Maciejewski, Dausey, Caldarone, & Potenza, 2004; Foottit & Anderson, 2012).

Although gambling is popular among older adults, some older-adult gamblers may gamble at risky or problematic levels, with the most severely affected experiencing pathological gambling (PG). PG is an impulse-control disorder characterized by “persistent and recurrent maladaptive gambling behavior” with deleterious effects on individuals’ personal, home, and work lives (American Psychiatric Association, 2000). The impact of PG may be particularly substantial for older adults. First, many older adults subsist on small, fixed incomes following retirement, and thus have limited capacities to recover from the legal and financial sequelae of risky/problematic gambling (Desai, 2004; Levens, Dyer, Zubritsky, Knott, & Oslin, 2005). Second, older adults are generally less healthy than younger adults, and mental and physical illness frequently co-occur with PG (Desai et al., 2004). Consequently, older adults with PG may be particularly likely to experience disruptions in multiple life domains (Desai, 2004). Given these circumstances, risky/problematic gambling in older adults warrants attention.

Multiple studies suggest that problem-gambling severity is associated with co-occurring psychopathology and adverse measures of well-being (for review, see: Tse, Hong, Wang, & Cunningham-Williams, 2012). For example, older-adult (aged 55 years and older) problem gamblers frequently reported gambling-related anxiety and depression, suicidality, and alcohol-use problems (Potenza, Steinberg, Wu, Rounsaville, & O'malley, 2006). Among adults aged 55 years and older with lifetime PG, high rates of comorbidity were observed with respect mood disorders (82.5%), anxiety disorders (47.5%) and alcohol dependence (32.5%) (Kerber, Black, & Buckwalter, 2008). Among African-American elderly, heavy and pathological gamblers reported less subjective well-being and greater anxiety, relative to light/moderate or non/occasional-gamblers (Bazargan, Bazargan, & Akanda, 2001). Canadian adults aged 55 years and older with gambling problems were more likely than older adults without gambling problems to report substance (particularly alcohol) dependence (McCready, Mann, Zhao, & Eves, 2008). Among adults aged 65 years and older, those who engaged in past-year ‘recreational gambling’ (i.e. non-problem/pathological gambling) were more likely than past-year non-gamblers to report past-year alcohol use (Desai et al., 2004). In a similarly-aged cohort, past-year recreational gamblers and past-year problem/pathological gamblers (PPG; individuals acknowledging 3 or more PG criteria) were more likely than past-year low-frequency gamblers/non-gamblers to have past-year nicotine dependence and alcohol abuse/dependence (Desai, Desai, & Potenza, 2007). Among adults aged 60 years and older and relative to a non-gambling group, individuals with lifetime PPG and recreational gambling had elevated odds for lifetime nicotine dependence, any alcohol-use disorder, any mood disorder, and any anxiety disorder, with lifetime PPG also associated with drug-use disorders (Pietrzak, Morasco, Blanco, Grant, & Petry, 2007). While these cross-sectional studies indicate that at-risk and problematic gambling is variably associated with adverse psychiatric correlates, the directionality of these associations cannot be determined. Data suggest that: (1) mental illness may contribute to the development of gambling problems, and, (2) gambling problems may contribute to the development of mental illness. In the former instance, a pathways model (Blaszczynski & Nower, 2002) hypothesizes this progression may be particularly relevant for older adults. In this model, a subset of problem gamblers are ‘emotionally vulnerable’ and have psychological and personality profiles marked by pre-morbid depression, poor coping skills, and negative life events. In this group, gambling ameliorates negative affective states or enhances arousal and through conditioning may lead to dependence (Blaszczynski et al., 2002). Across several studies, older adults commonly report motivations for gambling that include escaping from negative affective states or stress relief (Martin, Lichtenberg, & Templin, 2011; Wiebe & Cox, 2005). Furthermore, older adult heavy and pathological gamblers reported experiencing a greater number of recent stressful life events and higher levels of anxiety, relative to older adults with less severe gambling behaviors (Bazargan et al., 2001). The life events common among older adults—the death of a spouse/partner, increasing social isolation, role confusion following retirement, relocation to assisted living facility or retirement community, financial strain, and onset of chronic illness— may place older adults at risk for depression, anxiety, and other mental illness (Godfrey, Townsend, Sur, Boyle, & Brooker, 2005). The pathways model suggests that emotionally vulnerable older adults who gamble to cope with these feelings may be at particular risk for the development of gambling problems. Consistent with this model, a study of older-adult users of electronic gaming machines (EGMs) found that individuals who reported using EGMs to alleviate boredom or to forget about their problems when feeling stressed or depressed were more likely to demonstrate moderate-risk/problem gambling rather than low-risk/non-problem gambling (Southwell, Boreham, & Laffan, 2008).

In considering the second alternative, data suggest that gambling problems may predate the onset of psychopathology; however, these findings are not specific to older adults. In one study, past-year PPG was associated with elevated odds for incident generalized anxiety disorder in a general adult population sample (Chou & Afifi, 2011a). In a cross-sectional study where the age of onset for disorders was self-reported, problem gambling was associated with the subsequent onset of bipolar disorder, PTSD, alcohol or drug dependence, and nicotine dependence (Kessler et al., 2008). Such associations may be particularly relevant to older adults, who have been found to be at risk for late-onset mood, anxiety, and substance use disorders (Chou, Mackenzie, Liang, & Sareen, 2011b; Kessler et al., 2005a). Some older-adult gamblers report feeling guilty about their gambling, spending more on gambling that they had intended, and experiencing less control over gambling (McNeilly & Burke, 2000; Southwell et al., 2008). Furthermore, older adults who incur large gambling debts may experience higher levels of stress and shame (Argo & Black, 2004; Yi & Kanetkar, 2011) and detrimental effects on interpersonal relationships (Grant & Kim, 2001), compared to older adults without gambling debts. These factors may contribute to the development of anxiety and depressive disorders among older adults with gambling problems. Finally, gambling has been associated with elevated consumption of substances such as alcohol and tobacco (Petry, Stinson, & Grant, 2005). While these substances may be more accessible or socially acceptable in gambling venues, it is also possible that older adults increase their consumption of these substances to cope with gambling-associated guilt or anxiety (consistent with previously reported gambling-related motivations in older adults (McNeilly et al., 2000; Southwell et al., 2008)), which may lead to the development of substance-use disorders. Longitudinal studies examining this possibility are warranted to better understand gambling-related drinking motives and the temporal progression of substance consumption related to gambling.

Because some studies suggest that older-adult recreational and/or problem gambling represents a health concern (Desai et al., 2007; Erickson, Molina, Ladd, Pietrzak, & Petry, 2005; Pietrzak, Molina, Ladd, Kerins, & Petry, 2005; Pietrzak et al., 2007), whereas others suggest health-neutral or potential health benefits of older-adult recreational gambling (Desai et al., 2004; Foottit et al., 2012), we examined associations between past-year problem-gambling severity and incident psychopathology among older adults. The current study extends prior cross-sectional research that demonstrated positive relationships between at-risk and problematic levels of gambling and psychopathology (Desai et al., 2007; Pietrzak et al., 2007). We hypothesized that older adults with PG features, but not older-adult gamblers without PG features, would be more likely than non-gamblers/low frequency gamblers to develop incident psychopathology. Specifically, based on data described above, we hypothesized an increased incidence of generalized-anxiety disorder and substance-use disorders, particularly relating to tobacco and alcohol use. Furthermore, these associations would be found following control for measures of socio-demographic characteristics, physical health, stressful life events, and health-risk behaviors that are cross-sectionally associated with gambling behaviors and/or psychopathology.

METHODS

NESARC sample

A secondary analysis was performed on data from the National Epidemiologic Survey of Alcohol and Related Conditions (NESARC). Detailed methodology of the NESARC has been described elsewhere (Grant & Kaplan, 2005; Grant, Moore, Shepard, & Kaplan, 2003b). Data were collected in 2001-2002 (Wave 1) and 2004-2005 (Wave 2). Of the 34,653 individuals who completed both waves, we excluded 647 participants without valid data for the Wave-1 gambling module. We defined older adults as individuals who were 55 years or older at Wave 1 for comparability with prior work (Kerber et al., 2008; McCready et al., 2008; Petry, 2002; Potenza et al., 2006), and excluded 23,775 participants aged 18 to 54.. The resulting sample included 10,231 participants. To prospectively examine incident cases, we excluded individuals with a lifetime history of the disorder(s) of interest (assessed at Wave 1) from the baseline at-risk population. Thus, the analytical sample varied as function of incident disorder under study. This approach is standard for examining incidence with NESARC data (Chou et al., 2011a; Chou et al., 2011b; Grant et al., 2012; Martins et al., 2012; Schepis & Hakes, 2011).

Survey Instrument

The NESARC utilized the Alcohol Use Disorder and Associated Disabilities Interview Schedule—Diagnostic and Statistical Manual of Mental Disorders—Fourth Edition (AUDADIS-IV) to assess Axis I and Axis II mental disorders (Grant et al., 2003a). The NESARC study received full ethical review and approval (Grant & Dawson). Data are de-identified and publicly available, and therefore exempted from further Institutional-Review-Board review.

Measures

Dependent variables

Variables were binary, coded to denote the presence or absence of an incident Axis I disorder in the interval between Wave 1 and Wave 2, a period that averaged 36.6 months (Grant et al., 2005; Grant et al., 2003b). Dependent variables included the combined categories of any Axis 1 disorder (including any mood, anxiety, or substance-use disorder), any mood disorder (including major depressive disorder, dysthymia, mania, and hypomania), any anxiety disorder (including panic disorder with or without agoraphobia, agoraphobia, social phobia, specific phobia, and generalized-anxiety disorder), and any substance-use disorder (including alcohol abuse/dependence, nicotine dependence, and drug abuse/dependence), as well as each individual disorder. Drug abuse/dependence included the following drug classes: sedatives, tranquilizers, opiates (other than heroin or methadone), stimulants, hallucinogens, cannabis, cocaine, inhalants/solvents, heroin, and other drugs.

Independent variables

Past-year problem-gambling severity was assessed at Wave 1 with the AUDADIS-IV gambling module, which probed the ten inclusionary criteria for PG (American Psychiatric Association, 1994. Because we were interested in the effects of problem-gambling severity from a public health perspective, we segregated participants based on the number of past-year PG inclusionary criteria they endorsed, in a manner that we and other groups have done previously (Cunningham-Williams, Cottler, Compton, & Spitznagel, 1998; Kessler et al., 2008; Potenza et al., 2011; Rahman et al., 2012; Slutske et al., 2000). We defined low-frequency gambling/non-gambling (LFG/NG) as not having gambled more than five times in any one year in one's lifetime. Low-risk gambling (LRG) was defined as having gambled more than five times in a given year and acknowledging no past-year criteria for PG. At-risk/problem/pathological gambling (ARPG) was defined as having gambled more than five times in a given year and acknowledging one to ten inclusionary criteria for PG.

Covariates

All covariates were assessed at Wave 1 and operationalized according to prior NESARC work (Desai & Potenza, 2008; Martins et al., 2012; Petry et al., 2005). A description of covariates is included in supplemental materials.

Analytic approach

We first evaluated whether problem-gambling severity was associated with study covariates in the full sample using PROC CROSSTAB and PROC DESCRIPT. Statistical significance was determined with the Wald Chi-Square test. Using PROC CROSSTAB, we calculated the three-year incidence of each outcome according to problem-gambling severity, found by dividing the number of new cases of the disorder of interest (presented as unweighted i) by the baseline population at risk (i.e., those individuals without a lifetime history of the disorder at baseline, presented as unweighted n) and multiplying this value by 100 (presented as weighted %). To evaluate whether problem-gambling severity was significantly associated with incident psychopathology, we constructed three sets of binary logistic regression models using PROC RLOGIST. Model one was unadjusted for Wave 1 covariates, and included only problem-gambling severity. Model two included problem-gambling severity, demographic covariates (gender, age, race, education, marital status, household income) and relevant past-year Wave - psychiatric comorbidity (for incident mood disorders, we adjusted for baseline anxiety and substance-use disorders; for incident anxiety disorders, we adjusted for baseline mood and substance-use disorders; for incident substance-use disorders, we adjusted for baseline mood and anxiety disorders). Model three included model-2 covariates and additional adjustment for SF-12 physical health scores, medical conditions, stressful life events, and health-risk behaviors. We present multivariate-adjusted odds ratios (ORs) and their associated 95% confidence intervals (95% CIs). Statistical significance was determined with the Wald F-test for the overall effect of the variable and the t-test for individual contrasts.

RESULTS

Descriptive analysis

Baseline prevalence of problem-gambling severity

The prevalence of LFG/NG, LRG, and ARPG at Wave 1 was 67.3% (n=7,045), 29.9% (n=2,917), and 2.8% (n=269), respectively. Among those with ARPG, 84.7% endorsed 1 to 2 features of PG (at-risk gambling, n= 231), 13.3% endorsed 3 to 4 features of PG (problem gambling, n=30) and 2.0% endorsed 5 or more features of PG (pathological gambling, n=8).

Bivariate analysis of baseline study characteristics and past-year problem-gambling severity (Table 1)

Table 1
Baseline Demographics of Study Sample of Older Adults (n=10,231).

In bivariate analysis, Wave-1 problem-gambling severity was associated with age, gender, marital status, education, employment, income, any mood disorder, any anxiety disorder, and any substance-use disorder, tobacco-use status, alcohol-consumption status, drug-use status, stressful life events, and the SF-12 physical health score (all p<.02).

Problem- gambling severity and incident psychopathology (Table 2)

Table 2
Unadjusted (Bivariate) Analyses Examining the Relationships between Problem-Gambling Severity and Incident Axis 1 Psychopathology Amongst Older Adults

In unadjusted analyses, Wave-1 problem-gambling severity was associated with the incidence of any Axis-1 disorder, agoraphobia, any substance-use disorder, alcohol abuse/dependence, nicotine dependence, and drug abuse/dependence at Wave 2 (all p<.05).

Unadjusted and multivariate modeling (Table 3)

Table 3
Adjusted (Regression Model) Results Relating Problem-Gambling Severity to Incident Axis 1 Psychopathology Amongst Older Adults

Any incident Axis-I disorder

In line with our hypotheses, the incidence of any Axis-I disorder was elevated among individuals with ARPG (OR=2.09; p=.033), independently of socio-demographic characteristics (model 2). After further adjustment for model-3 covariates, this association was no longer significant.

Incident mood disorders

In model 1, ARPG was positively associated with the incidence of mania (OR=3.43; p=.015), relative to LFG/NG; however this association was no longer significant following adjustment for covariates in models 2 and 3. In model 3, LRG was negatively associated with the incidence of hypomania (OR=0.33; p=.017), relative to LFG/NG.

Incident anxiety disorders

In model 1, ARPG was positively associated with the incidence of panic disorder (OR=2.51; p=.048), relative to LFG/NG; however this association was no longer significant following adjustment for covariates in models 2 and 3. Across models, ARPG was positively associated with incident generalized anxiety disorder (e.g., Model 3: OR=2.51; p=.011),relative to LFG/NG.

Incident substance use disorders

In model 1, LRG and ARPG were significantly associated with incidence of any substance-use disorder, alcohol abuse/dependence, and nicotine dependence, relative to LFG/NG. In model 2, LRG remained associated with incident nicotine dependence (but not other substance-use disorders), and ARPG remained associated with the incidence of any substance use, alcohol abuse/dependence, and nicotine dependence, relative to LFG/NG. In model 3, ARPG was positively associated with the incidence of any substance-use disorder (OR=2.61; p=.0036) relative to LFG/NG; however, the associations between ARPG and incident nicotine dependence and alcohol abuse/dependence were no longer statistically significant.

Complete information for incident hypomania, generalized-anxiety disorder, and any substance-use disorder in model 3 are tabulated (Supplemental Table 1).

DISCUSSION

This study examined for the first time the prospective relationship between past-year problem-gambling severity and incident psychopathology among a nationally representative sample of older adults. Compared to older adults exhibiting no/low-frequency gambling, those acknowledging one or more inclusionary criteria for PG were more likely to develop mental illness. The relationship between recreational gambling (in the absence of PG criteria) and incident psychopathology appeared relatively benign. Adjustment for physical health, stress, and health-risk behaviors accounted for some of the variance in the associations observed between problem-gambling severity and incident substance-use disorders (individually and in aggregate), but not for generalized-anxiety disorder. These findings suggest distinct mechanisms in the gambling-related development of specific forms of psychopathology in older adults.

ARPG was associated with incident generalized-anxiety disorder and substance-use disorders. Multiple factors may contribute to these relationships. Older adults with ARPG may incur financial hardships as a result of their gambling and experience difficulties in interpersonal relationships or functioning in other life domains. Such life stresses could contribute to the development of generalized-anxiety disorder (Beekman et al., 1998). Furthermore, older adults with ARPG may consume alcohol, drugs, or tobacco to cope with stress (Wills & Hirky, 1996). Such maladaptive coping strategies may contribute to the development of substance abuse/dependence among ARPGs. The environmental context of gambling also warrants consideration. Casinos may offer free alcoholic beverages to gamblers and many casinos permit smoking. Thus, individuals who spend more time gambling at casinos may have greater exposure to and opportunities to use substances. Alcohol problems and smoking appear more prevalent among casino employees compared to the general population, and secondhand smoke exposure has been reported by most non-smoking casino employees (Shaffer, Vander Bilt, & Hall, 1999). The environmental permissiveness to smoke within gambling venues may contribute to the incidence of nicotine dependence amongst both LRG and ARPG groups. Other factors that link substance use disorders and PG (e.g., individual differences in impulse control, see (Leeman & Potenza, 2012)) also warrant consideration in the development of substance-use disorders associated with ARPG.

The findings have multiple implications. First, they highlight the relevance of inquiring about gambling behaviors amongst older adults. Brief screening instruments regarding gambling behaviors and gambling-related problems exist and should be used in clinical settings (Potenza, Fiellin, Heninger, Rounsaville, & Mazure, 2002; Sullivan, 1999). If gambling is identified, careful mental health inquiries about and assessments of generalized anxiety and tobacco and alcohol use may be warranted. Second, they indicate that additional research should investigate how gambling behaviors influence mental health, particularly as the current gambling environment includes accessible and socially acceptable gambling opportunities for older adults (e.g., bus trips to casinos). Third, other clinically relevant features related to mental health and gambling amongst older adults warrant consideration. For example, gambling problems and other mental health conditions have been noted in Parkinson's disease, a condition typically affecting older adults, and an improved understanding of the factors influencing the incidence of these conditions is needed (Leeman, Billingsley, & Potenza, in press; Leeman et al., 2012). Fourth, it will be important to understand better the gambling contexts under which mental health conditions may emerge. Compared to other surveys (e.g., the Gambling Impact and Behavior Survey (Gerstein et al., 1999)), the NESARC contained relatively limited information on gambling motivations and behaviors beyond DSM criteria; future studies are needed to investigate how gambling motivations and behavior may relate to incident psychopathology among NG/LFG, LRG, and ARPG groups.

While this study is characterized by a number of strengths, there are limitations. First, the definition of problem-gambling severity was derived from both the structure of the NESARC survey and the convention of prior work, rather than empirically validated definitions. Specifically, the categories of non-gamblers and low-frequency gamblers were combined because the NESARC survey questionnaire does not differentiate between these groups, and thus they could not be segregated in analyses. Second, other studies have distinguished among at-risk, problem, and pathological gamblers (Desai et al., 2008). However, small sample sizes necessitated grouping these individuals into a single category. Although this is an acceptable method of categorizing problem-gambling behavior and has been done previously (Cunningham-Williams et al., 1998; Kessler et al., 2008; Slutske et al., 2000), particularly for potentially vulnerable groups (e.g., adolescents (Potenza et al., 2011; Rahman et al., 2012)), future large studies of older adults should investigate specific groups based on more and less severe problem-gambling severity. In this way, we may more precisely understand the degree to which features of PG and the diagnosis of PG may differentially contribute to incident psychopathology. A third limitation was that problem-gambling severity was not assessed at Wave 2 of the NESARC survey. Thus, we could not assess whether psychopathology associated with incident ARPG. A fourth limitation is that 20.5% (n=2,862) of the 13,093 of older adults with valid Wave-1 data did not complete Wave 2. In addition to non-response, participants were excluded from participation at Wave 2 due to death, deportation, mental or physical impairment, or being on active duty in the military during the follow-up period (Grant et al., 2009). Exploratory analyses demonstrated that non-participation at Wave 2 was positively associated with older age, being male, being unmarried; drop-out was negatively associated with working part-time, physical health, and stressful life events (Supplemental Table 2). Since several factors (i.e., being male, being unmarried, poor physical health) are cross-sectionally associated with problem-gambling severity and psychiatric morbidity (Compton, Thomas, Stinson, & Grant, 2007; Hasin, Stinson, Ogburn, & Grant, 2007; Kessler, Chiu, Demler, Merikangas, & Walters, 2005b; Petry et al., 2005), it is possible that attrition results in an underestimation of incident cases. Therefore, in our analyses, it is likely that associations between problem-gambling severity and incident psychopathology are biased toward the null. A final limitation is that the sample included individuals aged 55 to 90 years. Although the minimum age of 55 years may be a liberal definition for “older adults”, this cut-off has been used in prior gambling studies (Kerber et al., 2008; McCready et al., 2008; Petry, 2002; Potenza et al., 2006), thus permitting comparability across studies. Furthermore, sociologists consider age 55 to be “young-old” (Suzman, Willis, & Manton, 1992). Additionally, age 55 was chosen as the minimum age in order to maximize the sample size and thus increase the power of our study. A larger concern is that clustering these individuals as “older adults” does not consider potential heterogeneity among this population. Ideally, stratification of this sample into the young-old, old, and oldest-old (Suzman et al., 1992) would enable an understanding that better accounts for cohort and age effects. However, the small size of the analytic samples, which are a consequence of examining incidence rather than prevalence, precluded this approach. Future studies should address this issue by sampling a larger population of older adults.

Despite these limitations, this study has multiple strengths. First, this is the first investigation of the prospective relationships between problem-gambling severity and incident psychopathology in older adults. Second, the AUDADIS-IV diagnostic module is valid and reliable for diagnosing psychopathology (Ruan et al., 2008). Third, analyses account for potential demographic confounders, psychiatric comorbidity, and measures of physical health, stress, and health-risk behaviors. Finally, the older adults are drawn from a large, nationally representative population sample. Unlike clinical samples, which are inherently biased toward sicker individuals, this study presents a more accurate picture of the relationship between problem-gambling severity and incident older-adult psychopathology in general, not only amongst those seeking clinical care.

In conclusion, we have demonstrated that ARPG is associated with incident generalized-anxiety substance-use disorders among older adults. In that the substance-use-disorder but not the generalized-anxiety-disorder findings appear partially accounted for by physical health, stress and health-risk factors (e.g., tobacco consumption), it highlights the possibility of distinct mechanisms relating to the types of ARPG-related incident psychiatric disorders. The findings have multiple public health and clinical implications. First, they suggest that individuals endorsing any features of PG should be monitored by clinicians, friends, or family for suggestive features of psychiatric disorders, particularly generalized-anxiety and tobacco- and alcohol-related substance-use disorders. In order to prevent this progression, clinicians might instruct patients to adopt healthier ways of coping, such as reducing stress through meditation and exercise. Second, efforts to educate the public on the potential risks of gambling among older adults might also incorporate this study's findings, so that older adults who gamble (as well as their friends and family) might have a better understanding and awareness of the potential psychiatric risks associated with problem-gambling behavior.

Supplementary Material

Acknowledgements

Conflicts of interest

Contributors

Disclosures

Role of Funding

Supplemental Material

07

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