Table 4.

Factors associated with compliance (proportion of waking-hour monitor-wearing time).

Characteristics	β (95% CI)	p a
Asthma status
No asthma	reference
Well controlled	−4.23 (−23.1, 14.64)	0.66
Poorly controlled	−4.68 (−26.15, 16.78)	0.67
Site
Site 1	reference
Site 2	11.73 (−8.08, 31.54)	0.25
Maternal age group (years)
<23	reference
23–29	7.60 (−7.93, 23.12)	0.34
≥30	7.48 (−1.42, 16.38)	0.10
Maternal body mass index
Normal	reference
Overweight/obese	−9.6 (−26.77, 7.57)	0.27
Exhaled nitric oxide (ppb)	0.1 (−0.48, 0.68)	0.74
Max morning peak flow (L/min)	−0.01 (−0.06, 0.04)	0.66
Max afternoon peak flow (L/min)	−0.02 (−0.07, 0.03)	0.45
Symptoms (yes vs. no)
Wheeze	−5.66 (−14.94, 3.62)	0.23
Cough	0.79 (−13.34, 14.93)	0.91
Shortness of breath	−2.99 (−14.16, 8.18)	0.60
Chest tightness	9.88 (−10.92, 30.67)	0.35
Chest pain	9.29 (−6.76, 25.34)	0.26
Nausea	13.27 (−2, 28.54)	0.09
Runny nose	2.06 (−9.57, 13.7)	0.73
Missed work	19.81 (0.91, 38.72)	0.04
Wake up at night	3.17 (−15.87, 22.2)	0.74
Exercise	−10.64 (−18.66, −2.61)	0.01
Smoke	−22.83 (−29.94, −15.71)	<0.001
Around a smoker	−16.24 (−26.43, −6.04)	<0.001
Used prescription drug	−13.39 (−26.42, −0.37)	0.04
Used over the counter drug	−10.37 (−26.39, 5.66)	0.20
Near heater	42.05 (33.8, 50.31)	<0.001
Near burning trash	−7.33 (−22.81, 8.16)	0.35
Used gas appliance	−8.74 (−22.99, 5.5)	0.23
Used clothes dryer	−6.29 (−20.58, 8)	0.39
Near water heater	15.41 (−6.13, 36.95)	0.16
Used printer	−1.11 (−15.94, 13.72)	0.88
Times spent outdoors (minutes)	0.03 (−0.04, 0.1)	0.38

^a Linear mixed models adjusted for within-person variation.