TABLE 3

Association Between Well-Child Adherence and All Asthma Exacerbations

StratumnUnadjusted HR (95% CI)Adjusted HR Model 1 (95% CI)aAdjusted HR Model 2 (95% CI)bInteraction Pc
Overall56560.95 (0.88–1.03)0.93 (0.85–1.01)0.90 (0.83–0.98)
Age 5–11 y41070.97 (0.89–1.07)0.97 (0.89–1.06)0.93 (0.85–1.03).10
Age 12–18 y15490.82 (0.67–1.00)0.82 (0.67–0.99)0.84 (0.68–1.03)
Male sex31900.99 (0.89–1.10)0.97 (0.87–1.08)0.93 (0.83–1.03).33
Female sex24660.92 (0.81–1.05)0.90 (0.79–1.02)0.89 (0.78–1.02)
Non-Hispanic white11371.04 (0.83–1.30)1.03 (0.83–1.28)1.07 (0.87–1.33).13
Non-Hispanic Black33210.90 (0.81–0.99)0.88 (0.79–0.97)0.84 (0.76–0.94)
Hispanic6841.23 (0.97–1.56)1.20 (0.94–1.53)1.08 (0.84–1.40)
Private insurance22600.95 (0.83–1.09)0.94 (0.82–1.09)0.96 (0.84–1.10).35
Public insurance36250.93 (0.84–1.03)0.89 (0.80–0.99)0.85 (0.77–0.95)
Self-pay5091.04 (0.63–1.73)0.93 (0.53–1.62)1.01 (0.56–1.80)
  • Values represent HRs (95% CIs) for having the event for patients who had expected well-child visits versus those who did not among patients in the well-child cohort. All models are stratified by the number of events. —, not applicable.

  • a Adjustment variables are age, sex, race, insurance type, number of encounters in the past year, atopy, obesity, and medication use. Models stratifying by a variable do not additionally adjust for that variable.

  • b Age groups represent age at time of first well-child visit. Insurance status strata include patients who have had the insurance status at any point during their follow-up (so, some patients may be counted in multiple categories).

  • c Interaction models include all covariates and the interactions of interest alone; reference groups are age 5–11 y, Non-Hispanic white race, and private insurance.