. 2021 Dec 6;16(2):142–151. doi: 10.1111/crj.13462

TABLE 6.

Logistic regression analysis of the effect on the recovery rate of BALF for each parameter, in the CFIP group (n = 214)

Variables		Univariate logistic regression			Multivariate logistic regression
Variables		OR (95%CI)		p‐value	OR (95%CI)		p‐value
Sex	Male	0.60	0.33–1.08	0.091	0.52	0.25–1.12	0.094
Sex	Female	REF			REF
Age	<65 years	1.08	0.57–2.05	0.809	0.96	0.49–1.89	0.898
Age	≥65 years	REF			REF
Smoking status	Ex/current smoker	0.72	0.40–1.29	0.268	0.99	0.47–2.12	0.985
Smoking status	Non‐smoker	REF			REF
Bronchus laterality	Left	0.58	0.33–1.02	0.058	0.46	0.25–0.85	0.013
Bronchus laterality	Right	REF			REF
Bronchus location	Others	0.69	0.34–1.40	0.306	0.53	0.25–1.13	0.101
Bronchus location	Middle/lingula	REF			REF
%VC	<65%	0.45	0.25–0.82	0.009	0.37	0.19–0.71	0.003
%VC	≥65%	REF			REF
FEV₁/FVC	<80%	0.76	0.43–1.34	0.341	0.51	0.27–0.96	0.037
FEV₁/FVC	≥80%	REF			REF

Note: The C‐statistics of multivariate logistic model is 0.67 (95%CI: 0.60–0.75).

Abbreviations: BALF, bronchoalveolar lavage fluid; CFIP, chronic fibrotic interstitial pneumonia; CI, confidence interval; FEV1/FVC, forced expiratory volume in 1 s divided by forced vital capacity; VC, vital capacity.