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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Environ Res. 2017 Mar 22;156:132–144. doi: 10.1016/j.envres.2017.03.021

Table 4.

Associations between maximum temperature and pediatric respiratory outcomes on lag days 0 to 6 and for 3-, 5-, and 7-day moving averages per increase in maximum temperature from 27 °C to 32 °C

Tmax Asthmaa ED Respiratory Disease b ED
Lag day Rate Ratio 95% CI Rate Ratio 95% CI
0 1.023 0.994 1.053 0.998 0.979 1.018
1 1.042 1.013 1.071 0.996 0.977 1.015
2 1.059 1.030 1.088 1.008 0.990 1.027
3 1.058 1.030 1.087 1.006 0.988 1.024
4 1.038 1.010 1.067 0.987 0.970 1.006
5 1.037 1.009 1.065 0.988 0.970 1.006
6 1.024 0.997 1.053 0.989 0.972 1.008
3-day avg. 1.072 1.036 1.109 1.006 0.983 1.029
5-day avg. 1.123 1.079 1.170 1.008 0.982 1.036
7-day avg. 1.147 1.097 1.199 1.004 0.975 1.035
a

primary diagnosis of asthma/wheeze (ICD-9 codes 493.0–493.9/786.07)

b

primary diagnosis of respiratory disease (ICD-9 codes 460–486, 493.0–493.9,786.07)

Abbreviations: °C, degrees Celsius; CI, confidence interval; ED, emergency department; ICD-9, International Classification of Diseases, 9th Revision; RR, rate ratio; Tmax, daily maximum temperature °C