Table 2.
Univariate analysis of sputum pathogen culture in AECOPD patients with concurrent respiratory infections and meteorological factors
| Meteorological factor (3days before admission) |
Total_Sputum Culture | 2013–2016_Sputum Culture | 2017–2019_Sputum Culture | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Positive (n = 597) |
Negative (n = 773) |
p
ttest |
Positive (n = 284) |
Negitive (n = 384) |
p
ttest |
Positive (n = 313) |
Negitive (n = 389) |
p
ttest |
|
|
Average atmospheric pressure (AAP), hPa |
1003.74 ± 9.99 | 1010.02 ± 10.63 | 0.552 | 999.98 ± 11.02 | 1009.98 ± 9.94 | 0.476 | 1006.56 ± 10.17 | 1010.81 ± 10.04 | 0.464 |
|
Average temperature (AT), ℃ |
13.15 ± 10.46 | 15.95 ± 11.39 | 0.332 | 12.88 ± 11.17 | 15.76 ± 11.73 | 0.414 | 13.43 ± 9.86 | 16.56 ± 10.17 | 0.443 |
|
Diurnal temperature difference (DTD), ℃ |
10.76 ± 4.73 | 7.07 ± 2.81 | 0.019 | 9.29 ± 4.75 | 6.92 ± 2.24 | 0.027 | 11.82 ± 4.51 | 8.15 ± 3.39 | 0.025 |
|
Average relative humidity (ARH), % |
77.43 ± 19.86 | 68.21 ± 17.17 | 0.038 | 75.17 ± 20.68 | 65.92 ± 17.17 | 0.051 | 78.95 ± 19.59 | 70.41 ± 19.74 | 0.046 |
|
Average wind speed (AWS), m/s |
3.1 ± 0.3 | 3.0 ± 0.3 | 0.279 | 3.0 ± 0.4 | 2.8 ± 0.3 | 0.340 | 3.1 ± 0.3 | 3.2 ± 0.4 | 0.288 |