TABLE 2.

Positive Predictive Values ICD-10 Codes

	n	PPV (95% CI)
Overall	376	0.89 (0.85–0.92)
Diagnosis order
Primary	106	0.94 (0.88–0.97)
Secondary	270	0.86 (0.81–0.90)
Secondary + primary psychiatric	237	0.90 (0.86–0.93)
Age, y
5–11	64	0.84 (0.74–0.91)
12–18	312	0.89 (0.85–0.92)