TABLE 2.

Radon exposure and respiratory outcomes

Radon exposure duration	Asthma diagnosis	Noisy breathing	Nighttime difficulty breathing	Nocturnal cough	Missed school days
N	3242	3192	3188	3228	3225
1 month moving average	1.86 (1.16–2.99)*	1.27 (0.81–2.01)	1.08 (0.60–1.95)	1.02 (0.66–1.57)	2.25 (1.23–4.15)**
5 month moving average	1.97 (1.25–3.11)**	1.46 (0.94–2.26)	1.23 (0.70–2.18)	1.18 (0.78–1.78)	2.37 (1.32–4.28)**
7 month moving average	1.89 (1.19–2.99)**	1.40 (0.90–2.18)	1.21 (0.68–2.14)	1.12 (0.74–1.70)	2.23 (1.2–4.05)**
12 month moving average	1.65 (1.00–2.73)	1.16 (0.72–1.88)	1.03 (0.55–1.92)	0.96 (0.61–1.51)	2.00 (1.04–3.83)*
24 month moving average	1.72 (0.99–3.00)	1.19 (0.70–2.02)	1.02 (0.51–2.02)	1.01 (0.61–1.66)	2.25 (1.10–4.60)*

Note: Logistic regression analysis adjusted for age, race, cohort, and year. Data are presented as odds ratio and 95% confidence interval.

^*p < 0.05

^**p < 0.01.