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Table 3 Comparison of the prevalence of asthma-like symptoms and asthma and outcome of logistic regression analysis in Zunyi in winter vs. summer

From: Correlation between indoor air pollution and adult respiratory health in Zunyi City in Southwest China: situation in two different seasons

Risk factors Winter Summer
Prevalence of asthma-like symptoms and asthma
B Standard Error OR (95%CI) P value B Standard Error OR (95%CI) p value
Constant −13.655 1.785 0.000 <0.001*** −8.255 1.511 0.000 <0.001***
Age, years 0.029 0.014 1.030 (1.003,1.058) 0.030* 0.031 0.013 1.032 (1.006,1.05) 0.016*
BMI 0.548 0.226 1.730 (1.111,2.693) 0.015* 0.262 0.253 1.299 (0.791,2.135) 0.301
Asthma and asthma-related symptoms in childhood 2.505 0.391 12.239 (5.690,26.329) <0.001*** 1.928 0.424 6.877 (2.994,15.767) <0.001***
Familial history of asthma-like symptoms and asthma 0.897 0.361 2.452 (1.209,4.971) 0.013* 0.660 0.410 1.934 (0.866,4.319) 0.107
Kitchen location 0.714 0.923 2.042 (0.334,12.478) 0.439 2.176 0.812 8.807 (1.794,43.241) 0.007**
Stove used for cooking or warming 0.608 0.217 1.836 (1.200,2.810) 0.005** 0.841 0.276 2.318 (1.349,3.982) 0.002**
Cooking oil fumes 0.973 0.384 2.646 (1.247,5.613) 0.011* 2.070 0.581 7.926 (2.538,24.753) <0.001***
Keep pets 1.087 0.403 2.966 (1.347,6.527) 0.007** −0.858 0.654 0.424 (0.118,1.526) 0.189
Smoking status 0.984 0.240 2.675 (1.670,4.284) <0.001*** 0.436 0.236 1.546 (0.973,2.457) 0.065*
Second-hand smoke 1.377 0.401 3.963 (1.807,8.691) <0.001*** 1.082 0.483 2.950 (1.144,7.607) 0.025*
Mattress use history −1.270 0.354 0.281 (0.140,0.562) <0.001***
Mold in bedroom 2.041 0.713 7.696 (1.903,31.127) 0.004**
  1. Logistic regression, α = 0.05, *significant at p < 0.05, **significant at p < 0.01, *** significant at p < 0.001