Table 4.

Factors Associated with Duration of Intercostal Drainage Treatment in Patients with Primary Spontaneous Pneumothorax (PSP) by Univariate Linear Regression Analysis

Factors	Coefficient	95% Confidence Interval	p value
Age	0.02	−0.11, 0.17	0.713
Male sex	0.86	−3.48, 5.21	0.692
Smoking	0.48	−3.40, 4.36	0.806
Alcohol consumption	2.78	−1.11, 6.69	0.158
Recurrent PSP	2.03	−2.28, 6.36	0.351
Body mass index	−0.58	−1.28, 0.11	0.099
Systolic blood pressure	0.07	−0.03, 0.17	0.174
Oxygen saturation	0.41	−0.44, 1.26	0.341
Serum albumin	1.90	−6.34, 10.15	0.637
Physical therapy modality	2.78	−1.91, 7.48	0.240
Visual analogue scale	0.11	−0.51, 7.30	0.721