Table 4. Meta-analytic findings for studies on adolescents’ PSHC, by multi-national sub-region (Random effects model).

	K	Mean OR	95% CI	Q	I2
By sub-region
Eastern Europe	26	1.00	0.93–1.07	160.67a	84.44
North America	13	0.98	0.91–1.07	122.74a	90.22
Northern Europe	46	1.13a	1.06–1.20	309.47a	85.46
Other	5	1.05	0.87–1.26	38.97a	89.74
Southern Europe	10	0.93	0.83–1.03	49.41a	81.79
Western Europe	39	1.04	0.98–1.10	395.98a	90.40
Total between				13.83a

^a P<0.001.