Table 2.

Multiple regression analyses of socioeconomic status and shift-and-persist strategies predicting asthma measures

Outcome	β	p
Asthma inflammation composite (baseline)
SES	−.355	<.001
Shift-and-persist	−.083	.403
SES × shift-and-persist	.187	.047
Asthma impairment (at 6 month follow up)
SES	−.273	.006
Shift-and-persist	−.160	.109
SES × shift-and-persist	.315	.001
Peak flow variability (at 6 month follow up)
SES	−.014	.899
Shift-and-persist	−.017	.881
SES × shift-and-persist	.186	.084

Note: All analyses control for child age, gender, ethnicity, asthma severity, inhaled corticosteroid use, beta agonist use. In addition, analyses that predicted outcomes at 6 month follow up controlled for baseline values. The asthma inflammation composite is a standardized score reflecting eosinophil counts and stimulated IL-4 production. The asthma impairment measure is a composite reflecting the percentage of days of school absences and rescue inhaler use during the 2 week daily diary assessment. Peak flow variability was calculated based on 2 weeks of morning and evening peak flow readings.