Table 2.

Maintenance Medication Use Among Children With Moderate to Severe Asthma

Total
(N = 524)
Phase I (1988–1991) (N = 253)Phase II (1991–1994) (N = 271)P Value
Any maintenance medication26.0%24.4%27.1%.8
Mast cell inhibitor 7.3%5.0%9.0%.4
Inhaled corticosteroid 7.5%3.7%10.4%.1
Theophylline15.1%19.1%12.1%.3