Table 2.
Logistic regression analysis of pneumonia in patients infected with H1N1pdm 6B.1 and 6B.2 viruses of Baltimore and Northern Taiwan in the 2015–16 season.
| Unadjusted |
IPTWa |
||||||
|---|---|---|---|---|---|---|---|
| Clade | Pneumonia | Odds ratio | 95% CI | P value | Odds ratio | 95% CI | P value |
| 6B.1 | 14.3% (7/49) | 1 | – | – | 1 | – | – |
| 6B.2 | 36.8% (7/19) | 3.500 | 1.629–5.372 | 0.046* | 3.261 | 1.696–4.826 | 0.008* |
a
IPTW results were done by propensity score weighting with recursive partitioning algorithm (area under the ROC curve: 0.798) for age, gender, comorbidities, obesity, vaccine status, human exposure and travel history, then followed by logistic regression analysis.
*
P < 0.05, logistic regression analysis.