Number of studies | Men | Women | Odds Ratio | 95% CI | Test of heterogeneity | |||
---|---|---|---|---|---|---|---|---|
Events | Total | Events | Total | |||||
College students | 10 | 2425 | 7892 | 2304 | 9846 | 1.56 | 1.30,1.87*** | Q(9) = 34.33, p < 0.0001 |
Middle school students^{a} | 19 | 8404 | 37,806 | 10,000 | 42,642 | 0.83 | 0.73,0.94** | Q(18) = 211.71, p < 0.00001 |
Clinical sample | 6 | 392 | 392 | 560 | 560 | 0.88 | 0.41,1.89 | Q(5) = 70.48, p < 0.00001 |
Total | 35 | 11,221 | 46,090 | 12,864 | 53,048 | 0.96 | 0.84,1.10 | Q(34) = 575.84, p < 0.00001 |
Heterogeneity: τ
^{2} = 0.14, χ
^{2} = 575.84, df = 34 (p < 0.00001), I^{2} = 94% Test of overall effect: Z = 0.59 (p = 0.56), | ||||||||
Test for subgroup difference: χ ^{2} = 31.05, df = 2 (p < 0.00001), I^{2} = 93.6% |