Table 3. Univariate and multivariate OR (95% CI) for Pneumocystis jirovecii positivity (logistic regression analysis)*.

	OR univariate (95% CI)	OR multivariate (95% CI)†
LRTI	1	1
URTI (vs LRTI)	2.74 (1.58–4.73)	2.00 (1.05–3.82)
Other (vs LRTI)	0.70 (0.20–2.41)	1.06 (0.27–4.20)
Age Q1	1	1
Age Q2 vs Q1	48.2 (11.3–205)	47.4 (11.0–203)
Age Q3 vs Q1	7.98 (1.77–36.0)	8.74 (1.92–39.7)
Age Q4 vs Q1	0.51 (0.05–5.71)	0.60 (0.05–6.71)
Sex (M vs F)	1.05 (0.62–1.77)
Coexisting conditions	0.61 (0.28–1.34)
Reported fever	0.51 (0.30–0.88)
Fever‡	0.86 (0.50–1.49)
RSV	0.94 (0.56–1.58)
Hospital days	0.94 (0.88–1.01)

*OR, odds ratio; CI, confidence interval; LRTI, lower respiratory tract infection; URTI, upper respiratory tract infection; M, male; F, female; RSV, respiratory syncytial virus.
†Including more variables in the model did not increase the fitness; including RSV showed it was not a confounder.
‡Defined by temperature at admission >37.5°C.