Table 4.

Significant Determinants of Urgent Care in the Drug Plan Subgroup

Variable	Level	Estimate	exp(estimate)	Standard Error	95% CI	Pr > ChiSq
Intercept	NA	−0.5602	0.57	0.2542	−1.0584 to −0.0619	0.0276
Age group (reference = 1 to <4 y)	≥10 y	−0.6710	0.51	0.2349	−1.1315 to −0.2105	0.0043
	4–10 y	−0.1803	0.84	0.1509	−0.476 to 0.1153	0.2319
Child sex	Female	−0.2981	0.74	0.1427	−0.5778 to −0.0183	0.0368
No. of nonurgent asthma-related physician visits in past 6 mo	NA	0.0501	1.05	0.0189	0.013 to 0.0872	0.0082
ED visit in past year	Yes	1.0444	2.84	0.2022	0.6481 to 1.4407	<.0001
Uses a nebulizer	Yes	0.5309	1.70	0.1466	0.2435 to 0.8183	0.0003
Received asthma action plan	Yes	−0.5645	0.57	0.1725	−0.9026 to −0.2264	0.0011
History of reaction to food, drugs, or insect bites	Yes	0.4193	1.52	0.1652	0.0955 to 0.7432	0.0112
Has a pet	Yes	0.4099	1.51	0.1458	0.124 to 0.6957	0.0049
Site of study recruitment	Non-ED	−1.2432	0.29	0.1576	−1.5521 to −0.9343	<.0001
Annual deductible ≥$90	Yes	−2.9521	0.05	1.0831	−5.0749 to −0.8293	0.0064
Out-of-pocket expenditures as a % of household income	NA	0.1351	1.14	0.0284	0.0794 to 0.1908	<.0001
Type of drug plan (reference = employee benefit plan)	Self-insured or other	−1.1591	0.31	0.5061	−2.1512 to −0.1671	0.022
	Provincial social assistance	0.1376	1.15	0.3216	−0.4928 to 0.7679	0.6688

Abbreviations: CI, confidence interval; ED, emergency department; NA, not applicable; Pr > ChiSq, probability that the regression coefficient is statistically significant in the full final statistical Poisson regression model.