Table 2.

Multivariable piecewise cox proportional hazards model for lung cancer patient cohort

		Estimate	P value	Overall P value	Hazard ratio (95% CI)
Gender	Female	−0.22	<0.0001	<0.0001	0.81 [0.77, 0.84]
	Male
Race	Black or African American	−0.02	0.57	0.0377	0.98 [0.91, 1.05]
	Other	−0.14	0.05		0.87 [0.78, 0.97]
	White
Performance status	Ambulatory	0.28	<0.0001	<0.0001	1.32 [1.26, 1.38]
	In bed < 50% of time	0.62	<0.0001		1.86 [1.71, 2.03]
	Fully active
Weight loss	Weight loss > 5%	0.18	<0.0001	<0.0001	1.20 [1.14, 1.26]
	Weight loss ≤ 5%
Disease	Advanced	0.77	<0.0001	<0.0001	2.16 [1.94, 2.42]
	Early
Histology	Small cell lung cancer	−0.02	0.80	0.1293	0.98 [0.87, 1.11]
	Adenocarcinoma	0.016	0.66		1.02 [0.95, 1.09]
	Other NSCLC	0.065	0.08		1.07 [0.99, 1.15]
	Squamous
Age	60 < Age < 70	0.04	0.06	<0.0001	1.05 [1.00, 1.10]
	Age ≥ 70	0.15	<0.0001		1.17 [1.11, 1.23]
	Age ≤ 60
BMI	BMI ≥ 28	−0.16	<0.0001	<0.0001	0.85 [0.79, 0.92]
	25 ≤ BMI < 28	−0.14	0.00		0.87 [0.80, 0.94]
	22 ≤ BMI < 25	−0.10	0.01		0.90 [0.84, 0.98]
	20 ≤ BMI < 22	−0.04	0.41		0.96 [0.88, 1.05]
	BMI < 20

Abbreviations: BMI, body mass index; CI, confidence interval.