Table 3.
Overall effect sizes and combined outcomes by different time points presented for studies reporting continuous and categorical measures
| Studies reporting continuous measures | Studies reporting categorical measures | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| K | N |
|
95% CI | Q | df | I 2 | K | N |
|
95% CI | Q | df | I 2 | |
| Overall effect size | 12 | 16279 | 0.22** | 0.08-0.36 | 184.11*** | 11 | 94.03% | 16 | 23010 | 0.94 | 0.85-1.04 | 38.08*** | 15 | 60.61% |
| Alcohol use: | ||||||||||||||
| <3 months | 8 | 6617 | 0.10** | 0.03-0.17 | 10.66 | 7 | 34.35% | 3 | 5763 | 1.18* | 1.00-1.40 | 0.82 | 2 | 0.00% |
| 4-12 months | 8 | 10479 | 0.27* | 0.03-0.52 | 239.19*** | 7 | 97.07% | 11 | 16409 | 0.86* | 0.75-0.99 | 29.57*** | 10 | 66.18% |
| >13 months | 3 | 6617 | 0.37 | −0.14-0.88 | 113.88*** | 2 | 98.24% | 10 | 18177 | 0.95 | 0.89-1.02 | 9.525 | 9 | 5.52% |
Note. Random effect model. k = number of studies; N = total number of participants; 
= mean Hedges’g; 
= mean Odds Ratio; Q = test of heterogeneity; 95% CI = confidence interval; df = degrees of freedom; I
2 = proportion of observed dispersion. *p < .05 **p < .01 ***p < .001.