Table 5.

Significant predictors of follow-up PHQ-9 scores in linear regression, adjusted for country and including baseline PHQ-9 scores

Predictor	Standardised coefficient	p-value
Baseline PHQ-9 score	0.43	<0.001
Composite stress score	0.25	<0.001
PAID score	0.10	<0.001
WHO-5 score	−0.06	0.038

N = 1531. Adjusted R² = 0.495. Non-significant factors: sex, insulin, age, complications, physical activity.