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Table 3 P-values for meta-regression analyses by study characteristics

From: Do mass media campaigns improve physical activity? a systematic review and meta-analysis

Variable Reduction in sedentary lifestyle (6 comparisons) Sufficient physical activity (4 comparisons)
Mean age 0.054 0.326
Sex 0.104 0.885
Medium 0.159 0.171
Approacha 0.033 0.813
Whether ads were paid -b 0.970
Percent coverage 0.697 0.449
Scope 0.712 0.759
Duration of intervention 0.718 0.707
Duration of follow-up 0.552 0.297
Quality 0.119 0.447
  1. a Campaigns based on ‘social norms’ versus those using either celebrities or a risk message.
  2. b There were not enough observations for this meta-regression.