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Logo of nihpaAbout Author manuscriptsSubmit a manuscriptNIH Public Access; Author Manuscript; Accepted for publication in peer reviewed journal;
Prev Med. Author manuscript; available in PMC Jul 1, 2009.
Published in final edited form as:
Prev Med. Jul 2008; 47(1): 3–16.
Published online Feb 20, 2008. doi: 10.1016/j.ypmed.2008.02.014
Table 2
Moderators of effect sizes for knowledge, attitudes, social norms, and self-efficacy in computer-delivered interventions to promote health.
KnowledgeAttitudesSocial NormsSelf-Efficacy
Sample Characteristics
  Proportion women0.34<.0122−0.05ns21−0.30−
  Computer Experience0.66<.017−0.59ns5−0.05ns40.63ns4
Study Characteristics
  Control Type (active vs. no treatment)−0.20.0524−0.29<.0122−0.35<.0180.07ns12
Intervention Characteristics
   Physical activity----.0.07ns22----.0.13ns12
   Diet and/or weight0.33<.0124−0.52<.0122−0.25.038−0.27ns12
   Safer sex0.07ns240.01ns22−0.21ns80.29ns12
   Tobacco use----.----.----.----.
   Substance use−0.06ns240.14ns22----.0.19ns12
   CD ROM−0.15ns24−0.49<.0122−0.16ns8−0.68<.0112
   On-site vs. Off-site0.04ns23−0.41<.0121−0.08ns8−0.21ns12
   Behavioral Skills0.08ns24−0.06ns22−0.42<.018----.
  Dose (mins X sessions)−0.08ns230.29<.0121−0.38<.0180.05ns12
  Assessment (no. of weeks)0.13ns24−0.07ns220.29.028−0.28ns12
Note. Models used the inverse of the variance for each effect size as weights; reported coefficients (β) are standardized. k = number of studies. ns, not significant at p ≤.05 level. Potential moderators with missing values indicate insufficient observations or all observations contained identical values.