Table 4. Adjusted expenditures by category for publicly insured children with a chronic condition (N = 6,060).

	Any expenditure		Expenditure amount if any		Combined incremental effect
	OR	95 % CI	β	95 % CI	IE ($)	95 % CI
Total expenditures	0.71*	(0.51–0.98)	0.12	(−0.08–0.31)	281.67*	(270.40–292.94)
ED expenditures	1.26*	(1.03–1.54)	−0.18	(−0.39–0.02)	0.86*	(0.76–0.96)
Office visit expenditures	0.85	(0.67–1.09)	0.14	(−0.07–0.34)	54.30*	(53.28–55.32)
Inpatient hospital
Expenditures	1.07	(0.85–1.34)	–0.07	(−0.50–0.36)	−40.10*	(−41.35 to –38.80)
Outpatient expenditures	0.95	(0.76–1.20)	–0.09	(−0.59–0.41)	–30.16*	(–30.62 to –29.71)
Prescription
Expenditures	0.96	(0.78–1.17)	0.03	(−0.15–0.21)	12.42*	(11.97–12.86)
Dental expenditures	0.81*	(0.66–0.98)	0.16	(−0.08–0.40)	4.54*	(4.42–4.66)

The combined incremental effect was calculated by combining both parts of the model with the formula IE = [Pr(y > 0lx = 1) -Pr(y >0|x = 0)] 9 E[y|y>0] + Pr(y>0) × (E[y|y>0, x = 1] – E[y|y>0, x = 0), where y is the expenditure, x is whether or not the mother reported depressive symptoms, Pr is the probability from the logit model and E[y] is the expected value of expenditures from the GLM model. The 95 % CI was estimated by bootstrapping for 1,000 repetitions

^*p <.05