Table 3: Multivariate linear regression model for hospital costs per admission to hospital for anorexia nervosa in adolescent patients

Predictor variable	Logarithmic cost model (SE)	Calculated marginal change, %	Approximate marginal cost change, CAD*	p value†
Intercept	11.979 (0.317)	NA	NA	< 0.001
Wait time between referral and treatment	–0.0170 (0.0103)	–3.8	–902.45	0.10
BMI at admission	–0.0740 (0.0191)	–15.7	–3346.82	< 0.001

Note: R² = 18.3%; BMI = body mass index, CAD = Canadian dollars, NA = not available, SE = standard error.  *Values obtained through regression model of untransformed costs. †Wald test.