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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: J Am Acad Child Adolesc Psychiatry. 2015 Oct 22;55(1):41–46.e1. doi: 10.1016/j.jaac.2015.09.021

Table 2. Hazard Ratios (HR) and 95% CIs for Association Between School Achievement (SA; Modeled as a Continuous Z-score) and Risk of Anorexia Nervosa.

Females Males
HR (95% CI) HR (95% CI)
Model A Z-score (SA) 1.29 (1.25, 1.33) 1.29 (1.10, 1.52)
Model B Z-score (SA) 1.19 (1.14, 1.23) 1.32 (1.11, 1.58)
Parental education 1.18 (1.15, 1.21) 1.04 (0.91, 1.20)
Model C Z-score (SA) 1.19 (1.14, 1.24) 1.34 (1.11, 1.61)
Parental education 1.17 (1.14, 1.20) 1.03 (0.89, 1.19)
Year of birth 1.10 (1.10, 1.11) 1.11 (1.07, 1.14)
Model D Z-score (SA) 1.29 (1.23, 1.36) 1.58 (1.23, 2.03)
Parental education 1.16 (1.14, 1.20) 1.02 (0.89, 1.18)
Year of birth 1.10 (1.10, 1.11) 1.11 (1.07, 1.14)
Log(time) * Z-score 0.92 (0.90, 0.95) 0.84 (0.73, 0.96)