Table 2:

Predicted means of health outcomes adjusted for BMI category, income, and nasal symptoms with a cold/flu and without a cold/flu

	No snoring	Rare snoring	Sometimes snoring	Habitual snoring
Primary Outcome
Maximum Symptom days	2.7 (2.3- 3.1)	2.7 (2.2-3.1)	2.7 (2.3-3.2)	3.8 (3.2-4.4)
Secondary Outcomes
Healthcare use	0.21 (0.14-0.28)	0.25 (0.17-0.33)	0.25 (0.17-0.34)	0.37 (0.25-0.48)
School absences	0.9 (0.6-1.1)	1.0 (0.7-1.2)	1.1 (0.8-1.4)	1.1 (0.8-1.5)
Missed sleep	0.7 (0.5-0.9)	0.9 (0.7-1.2)	1.1 (0.8-1.4)	1.5 (1.1-1.8)
Changed plans	0.2 (0.1-0.3)	0.4 (0.2-0.5)	0.4 (0.2-0.5)	0.6 (0.4-0.9)
Composite asthma control	0.43 (0.37-0.49)	0.50(0.44-0.56)	0.52(0.45-0.58)	0.53 (0.47-0.60)

Primary outcome: Maximum asthma symptom days were determined by the largest value among the following three variables in the 14 days prior to each survey: (a) number of days with wheezing, chest tightness, or cough, (b) number of days on which child had to slow down or stop his/her play or activities due to wheezing, chest tightness, or cough, and (c) number of nights the participant woke up because of wheezing, chest tightness, or cough leading to disturbed sleep.

Secondary outcomes: Healthcare use was defined as number of hospitalizations and unscheduled health care visits; school absences and changed plans were defined as number of days of missed school or change in caregiver plans; missed sleep was defined as number of nights caregiver lost sleep because of child’s asthma; a composite outcome of poor asthma control over the prior 4 weeks was defined by any of the following: shortness of breath more than twice weekly, nighttime awakenings owing to asthma at least once, limitation in activity level, or use of rescue asthma medication 2 or more times weekly.