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. 2021 Oct 1;11(10):e049553. doi: 10.1136/bmjopen-2021-049553

Table 2.

Results from the multilevel analysis of individual heterogeneity and discriminatory accuracy (MAIHDA) distinguishing between measures of association (ORs) and measures of variance and discriminatory accuracy.

Without mental health issues With mental health issues
Model 1 Model 2 Model 1 Model 2
Measures of association
Age
 12–17 years Reference Reference
 18–23 years 1.78 (1.36–2.42) 1.57 (1.38–1.76)
 24–30 years 2.09 (1.65–2.70) 2.66 (2.36–3.00)
Income
 High income Reference Reference
 Medium income 1.05 (0.78–1.37) 0.87 (0.77–0.98)
 Low income 1.10 (0.81–1.41) 0.87 (0.77–0.98)
Immigrant background
 None Reference Reference
 Yes 0.63 (0.49–0.79) 0.55 (0.49–0.61)
Hormonal contraception
 No Reference Reference
 Yes 1.62 (1.34–2.06) 1.19 (1.08–1.31)
Measures of variance and discriminatory accuracy*
 Variance 0.30 (0.18–0.50) 0.10 (0.06–0.18) 0.29 (0.18–0.49) 0.02 (0.01–0.03)
 VPC 8.45% 3.02% 8.18% 0.49%
 PCV 66.29% 94.48%
 AUC 0.62 (0.62–0.62) 0.62 (0.62–0.62) 0.64 (0.64–0.64) 0.64 (0.64–0.64)

The analyses are stratified by the existence of previous mental issues.

Values are point estimations (with 95% credible intervals) or percentages where indicated.

*Between-strata variance.

AUC, area under the curve; PCV, proportional change of the variance; VPC, variance partition coefficient.