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Children who have been maltreated are at increased risk of further maltreatment. Competent identification of those at highest risk of further maltreatment is an important part of safe and effective practice, but is a complex and demanding task.
To systematically review the research base predicting those children at highest risk of recurrent maltreatment.
Systematic review of cohort studies investigating factors associated with substantiated maltreatment recurrence in children.
Sixteen studies met the inclusion criteria. The studies were heterogeneous. A variety of forms of maltreatment were considered. Four factors were most consistently identified as predicting future maltreatment: number of previous episodes of maltreatment; neglect (as opposed to other forms of maltreatment); parental conflict; and parental mental health problems. Children maltreated previously were approximately six times more likely to experience recurrent maltreatment than children who had not previously been maltreated. The risk of recurrence was highest in the period soon after the index episode of maltreatment (within 30 days), and diminished thereafter.
There are factors clearly associated with an increased risk of recurrent maltreatment, and these should be considered in professional assessments of children who have been maltreated. A comprehensive approach to risk assessment, including but not solely based on these factors, is likely to lead to interventions which offer greater protection to children.
Child abuse and neglect is a major environmental risk factor for poor psychosocial outcomes with respect to both future morbidity and mortality.1,2,3,4 Risk of recurrence, following an index event is high, with rates varying between 15% and 50%.5
Many inquiries into child deaths and serious injuries involve children already known to child protection services. This raises important questions for clinicians and practitioners faced with a situation where a child has been maltreated, particularly in assessing the risk of maltreatment reoccurring in the same child. Clinicians are encouraged to gather data systematically,6 but considerable uncertainty remains as to which potential risk factors should take precedence.
Evidence that identifies certain risk factors for recurrence of maltreatment already exists.5,7 However, many of the studies have methodological problems, and it has been difficult to extract consistent messages from such a varied evidence base. In spite of this, professionals working with children are still required to make crucial decisions about whether children continue to live in or be returned to a family where an incident of abuse has occurred.
We were aware of no systematic review of existing studies of confirmed child maltreatment. We undertook a systematic review of cohort studies investigating factors associated with substantiated maltreatment recurrence in children.
The aim of this systematic review was to identify all cohort studies (published or unpublished) available for review to January 2003, which identified factors linked with recurrence of substantiated child maltreatment.
Two reviewers (NH and PR) independently searched Medline (1966 to January 2003), Psyclit (1872 to January 2003), Cinahl (1982 to September 2003), Sigle (1980 to June 2003), Embase (to September 2003), and the National Clearing House on Child Abuse and Neglect Information (NCCANI) (search date, 24 September 2003). We searched using the following terms: terms relating to children (“young people”, “young person”, “child”, “children”, “adolescent/s”, “adolescence”, etc); terms relating to child abuse (“neglect”, “maltreatment”, “battered”, “significant harm”, etc); terms relating to repetition (“re‐abuse”, “recurrence”, “reunification”, etc); and reference to “outcome”. The full search strategy is available from the authors.
The reference lists of all selected studies were inspected to identify additional published and unpublished research.
We searched the three journals which produced the most citations for the review (Child Abuse and Neglect, Child and Youth Services Review, and Child Maltreatment). Issues for the period January 1993 to January 2003 were inspected electronically for further references.
In addition to the above, authors of identified papers and experts in the field were contacted and asked to identify further studies.
All papers of potential relevance were requested. NH and PR independently checked all identified studies. Final decisions, relating to inclusion of papers for review, were made by collective discussion with the third author (DJ). We considered studies eligible for review if:
The above inclusion criteria meant that we deliberately excluded studies that focused solely on adult perpetrators and studies of “referrals” or “suspected” cases of recurrent maltreatment. The focus was therefore on studies concentrating on children and families in which recurrent maltreatment occurred. Only studies of “substantiated” maltreatment were included in order to have a more homogenous set of studies, in that all participants would then have had to meet a threshold of confidence that maltreatment had occurred. However, all forms of recognised child maltreatment were eligible for inclusion, including less commonly researched forms such as fabricated illness, and studies which considered child death.
Inclusion was restricted to studies of a cohort design because case‐control studies are more likely to be subject to significant selection biases that may compromise the validity of the results.8
Two reviewers (NH and PR) assessed the methodological quality of included studies. We used a scoring system that addressed those aspects of study design most important for internal validity. This was adapted from others scales for the assessment of cohort studies.8 The key variables assessed were: sample selection; study design; identification of risk factors; dropouts or withdrawals; clarity of outcome measure; degree of statistical analysis; and appraisal of limitations. Each of the seven variables was assessed on a three‐point scale (poor (0), fair (1) and good (2)). The total quality score was obtained by adding the scores of the seven variables, giving a total score ranging from 0 to 14. Differences between reviewers were resolved by consensus.
Two reviewers (NH and PR) extracted further data relating to participant characteristics, type of maltreatment experienced, reabuse rates, length of follow up, and factors associated with recurrence of maltreatment.
The results of the included studies were not statistically combined in a meta‐analysis because of the heterogeneity of studies, for example in terms of the setting participants were recruited from (Child Protective Services (CPS) versus court samples), or the type of maltreatment (neglect versus child sexual abuse). It has also been strongly argued8,9 that meta‐analyses of observational epidemiological studies can produce spuriously accurate, and so misleading, summary statistics. In the absence of meta‐analysis, risk factors were identified if they were clearly identified in at least two studies, and the evidence across studies was consistent.
Detailed findings of the individual included studies are collated in the tables. Table 11 contains a summary of the overall findings, and table 22 presents a summary of the key identified variables. The following paragraphs provide an overview of principal findings.
Eighty nine studies were identified for potential inclusion. Thirteen were available only in abstract form. We therefore reviewed 76 studies in depth. Sixty failed to meet inclusion criteria. The reasons for this were: failure to demonstrate substantiation of maltreatment or recurrence, insufficient data on risk factors, insufficient statistical data, studies following up adult abusers, design other than cohort study, and various combinations of these.
The significant variability in the studies presented here has already been alluded to in the methods section. Some of the greatest sources of variability have been described above, for example the wide range of settings and sources of recruitment for the studies, and the range in the types of maltreatment considered. Care should be taken in considering the summary findings from such a broad range of studies, and it is in part for this reason that statistical meta‐analysis was not undertaken.
Only one study appeared to be truly prospective in design.24 There was a considerable spread of quality scores across the papers reviewed (see table 11).). The total quality scores for individual papers ranged between 4 and 12 (maximum possible score 14).
No formal sensitivity analysis was undertaken as no summary statistics were prepared (for reasons outlined above). However, three of the studies17,21,23 scored at the lower end of the quality score; these were smaller studies of more selected populations, and generally identified a higher rate of recurrence of maltreatment. In the text that follows we clearly identify where results are obtained from one of these “lower quality scoring” studies, and would urge the reader to interpret their findings with more caution.
Fifteen studies were conducted in the United States and one24 was conducted in Australia. The majority dealt with samples of families/children living in community settings identified by administrative child protection databases. These studies comprised:
Eight studies included children who had experienced any form of maltreatment (neglect, emotional abuse, physical abuse, sexual abuse).14,15,16,17,19,20,22,25 Six studies excluded child sexual abuse.10,11,12,13,21,23 One study was only of children who had experienced physical abuse18 and another included only children who had been sexually abused.24 Most studies, including those which defined a specific type or types of maltreatment at the start, considered any form of subsequent maltreatment as a measure of recurrence.
There was a wide range of follow up times across the studies. A number of studies defined individual follow up times from index episode (range 1 month to 6 years).10,11,12,13,14,15,16,18,20,24,25 For the remaining studies,17,19,20,21,22,23 the precise length of follow up for individual cases was not clear.
There was wide variation in the rates of maltreatment recurrence across this body of studies. Some studies examined the recurrence of maltreatment in the same child.15,16,17,21,22,24,25 The largest and most inclusive of these,15 describes recurrence rates of 14.7% (range 3.5–22.2% across US states) at 6 months, and 22.6% at 18 months. In other studies10,11,12,13,14,17,19,20 maltreatment was considered recurrent if affecting any child in the same family. Of these studies, the largest, most inclusive found a recurrence rate of 6.4% at 6 months and 10.6% at 18 months.14
The time of greatest risk of recurrent maltreatment appears to be soon after an index episode—particularly during the first month.12,16,23 Two years after case closure the risk of recurrent maltreatment levels out and remains low.12
Details of the individual factors associated with maltreatment recurrence in each study are given in the tables.
The balance of research suggested that neglect is the type of abuse associated with the highest risk of future maltreatment.11,15,16,25 One study, with a low quality score, differed from this;17 while finding high rates of recurrent neglect, it found even higher rates of recurrent physical abuse.
Only two studies examined the relationship between the severity of index maltreatment and future recurrence. Swanston and colleagues24 found that more severe forms of sexual abuse were related to subsequent notifications for maltreatment. In their court sample, Murphy and colleagues,21 found no association between severity or type of index maltreatment and a later return to court (note low quality score for this study).
A prior history of maltreatment was the factor most consistently associated with recurrent maltreatment in the studies reviewed here.14,20,21,22,24,25 English et al14 found that the “largest single factor (in recurrence) is number of prior CPS referrals…” Other studies found that the risk of recurrent maltreatment increases after each maltreatment event, and that the time between episodes of maltreatment shortens as number of maltreatment episodes increases.12,15 Only two studies with good quality scores allowed for the calculation of a risk estimate:24,25 previously maltreated children were approximately six times more likely to experience recurrent maltreatment than children who had not previously been maltreated.
A limited number of child factors were considered by researchers.
Four studies found that younger children were at higher risk of recurrence of maltreatment.14,15,16,17 Three other studies21,23,24 found no effect of age. (Rivara23 gave no statistics to support these findings and Murphy et al21 achieved a low quality score.)
Only one study specifically examined ethnicity.16 There were no robust findings of differences in recurrence rates between ethnic groups.
Three studies found associations between recurrence of maltreatment and the child's primary caretaker themselves having been maltreated as a child.14,22,25 Such an association was not found by Swanston et al's24 study of recurrence after sexual abuse.
Both English14 and Rittner22 found an association between a parental history of substance abuse and subsequent maltreatment. In Rittner's study22 this association disappeared when other factors were controlled for using multivariate analysis. Swanston et al24 found specifically that a history of alcohol abuse in a parent increased the risk of recurrence of maltreatment.
Two studies22,24 found that a parental history of mental health problems was associated with recurrent maltreatment. English et al14 found that caregiver impairments (mental, physical, emotional—not further specified) were associated with recurrent maltreatment. Murphy et al,21 one of the lower quality scoring studies, found that parental psychosis or “character disorder” was associated with an increased risk of return to court for repeated maltreatment. Wood et al25 found that caretaker intellectual limitations were associated with subsequent neglect, but that caretaker age was not associated with recurrent maltreatment.
Factors related to parenting ability were studied by Johnson and L'Esperance.18 Variables were combined to produce a “parenting skills index” (mother's skills and reasonableness of expectations) which was associated with recurrent maltreatment. English14 found that the degree of protection offered to the child by the non‐abusing carer was linked to lower rates of recurrent maltreatment.
Families who had a child previously placed in care (not necessarily the index child) were found to be at higher risk of recurrent maltreatment by Depanfilis and Zuravin.10 Swanston et al24 found that a change in caregiver before intake, social workers' rating of family functioning, and multiple changes in caregiver were each associated with both recurrent sexual abuse and maltreatment overall.
Wood25 found that the number of victims involved in an incident of abuse was associated with recurrent maltreatment, as was inadequate supervision by either caregiver. Inadequate physical care was not associated with recurrent maltreatment.
DePanfilis and Zuravin10 found that a social support deficit construct (no support in extended family, no supportive friends, ineffective use of informal helping systems) was associated with recurrent maltreatment. English14 found similarly for “lack of social support”. Elsewhere, authors created “family stress”,10 “child vulnerability”,10 and “parental stress”18 constructs or indices, which were each significantly associated with recurrent maltreatment.
Rittner22 was alone in studying economic factors. She found that having no income was related to recurrent maltreatment.
A number of factors related to compliance with services were found to be related to outcome.
Attendance was associated with a significant reduced risk of recurrence of maltreatment in one study.13 A number of service factors, however, were not related to risk of recurrence. These included: admission by perpetrator; numbers of caseworkers or casework contacts; use of the juvenile court; level of cooperation of caregiver; presence of signed service agreement; and degree of improvement by the end of the study.
Johnson and L'Esperance18 found that a client's capacity to use resources was associated with reduced risk of recurrent abuse. Littel19 examined participation in treatment planning (“collaboration”) and found, as expected, a direct relationship with compliance with programme expectations. Equally, greater “compliance” (keeping appointments, completing tasks, and cooperation) was associated with reduced risk of recurrent maltreatment during service provision but not after service termination.
Rittner22 found that cooperation/compliance with court orders was not predictive of maltreatment recurrence. Rivara23 also stated (without statistical support) that there was no relation between compliance with treatment and recurrent maltreatment.
We identified factors associated with substantiated recurrent maltreatment in children and families. Individual factors most consistently identified were: the number of previous episodes of maltreatment in the child or family; neglect (as opposed to other types of maltreatment); parental conflict; and parental mental health problems.
A range of other parental, family, and environmental factors were also found to be associated with recurrent maltreatment, albeit less consistently. Those with some suggestion of association with recurrent maltreatment were: parental substance/alcohol abuse; “family stress”; a lack of social support; families with younger children; parental history of abuse; and already being in contact with child protection services.
It was consistently found that the period of greatest risk for maltreatment recurrence occurred directly after the index episode with the risk then gradually declining with time. (This should be interpreted somewhat cautiously however, as most studies did not use survival analysis techniques and so this finding may be somewhat artefactual.) Furthermore, the risk of recurrent maltreatment increased after each maltreatment event, and the time between episodes of maltreatment shortened as the number of maltreatment episodes increased.12,15
It is notable that some factors identified elsewhere5,7 did not emerge as significant risk factors in this review. These include quality of attachment or closeness in the relationship between parent and child, and severity of abuse.
A number of limitations of this review should be considered when interpreting the findings. Firstly, we only selected studies that included cases of substantiated maltreatment. This led to some studies, particularly those including all referrals to child protection services, being excluded. There has been considerable debate about whether it is meaningful to separate studies in this way,13,25 and by doing so we may have introduced an element of bias in that these findings may not reflect accurately the risk factors for all children who are maltreated, rather just those who pass into Child Protection Services. However, the decision to do this does mean that the findings considered here are from studies with clearly verified outcomes. In order to maintain this focus on the child at risk, we also excluded studies which focused specifically on predictors of recidivism in adult offenders. These are reviewed elsewhere.26,27,28
The literature itself is heterogeneous in design, types of abuse studied, populations sampled, risk factors considered, and methods of statistical analysis. Of the studies selected, most were retrospective in design, and several lacked important information about the conduct of the research. Unsurprisingly, given the difficulties in following up families where abuse has occurred, there were significant drop‐out rates. The different populations studied and the wide variations in quality between studies meant that meta‐analysis could not be meaningfully undertaken;9 this limits the extent to which robust conclusions can be drawn.
As with any systematic review, there is a possibility of publication bias (whereby studies with positive results are more likely to be published). We endeavoured to reduce this by contacting researchers in the field to obtain unpublished research. A further criticism sometimes levelled at systematic reviews in this field is that by excluding all but the most methodologically robust studies, important research findings are lost. While there is an omission of some research, this critique also reflects a strength of systematic reviews compared to narrative reviews—the reader can be clear on what basis the studies have been selected, and the review is less prone to other forms of bias, introduced by too much weight being given to the findings of studies which are flawed or weaker in design. In this context systematic reviews should be seen as complementary to narrative reviews, providing a clear and sometimes different view of the literature. Indeed we have also undertaken more narrative reviews of this kind.5,29
A further limitation to be noted is that 15 of the studies in this review were conducted in the United States and the sixteenth in Australia; some caution should therefore be exercised in extrapolating the findings directly to the United Kingdom and other jurisdictions where different services and definitions may prevail. Large differences in demographic factors such as levels of poverty are also important to consider when extrapolating the findings to other settings.
It is of interest that the findings of the present review accord broadly with previous reviews5,7 that have not restricted themselves to substantiated abuse, or to particular (more robust) study designs. These have linked the following psychosocial risk factors with recurrent maltreatment: neglect; severe maltreatment; multiple types; lack of acknowledgement, or cooperation; younger children; prior history of abuse; parental mental disorder, substance abuse; larger families; young caregivers; step parents; rural families; poor families; domestic violence; and lack of social support. This degree of concordance provides support for the robustness of the present findings.
This study underscores evidence for the existence of a variety of family, child, parental, and environmental indices associated with recurrent child maltreatment. This lends support to the use of multi‐modal assessment approaches, and in turn implies a need for clinicians to use the factors identified as part of a structured approach to the management of risk of recurrence.31 The factors themselves may be identified by different professionals, thus emphasising the need for inter‐professional collaboration to improve the quality and process of assessment and management of risk. Only then can we hope to reduce the likelihood of subsequent maltreatment recurrence in individual cases.
We are grateful to John D Fluke, Kim Oates, and Richard Beckett for providing information on research studies, Stuart Logan for advice on methodology, and Rosie Nicol‐Harper and Seena Fazel for helpful comments on earlier drafts of the manuscript.
Funding: PR held a special training fellowship in Health Services and Health of the Public Research funded by the Medical Research Council (UK) during the undertaking of this research.
Competing interests: none