Table 7.

Cox proportional hazards model of time to lung cancer mortality according to amount of current total physical activity (MET-min/wk) by BMI, smoking categories, and age groups

Total physical activity MET-min/wk	BMI
	<25 kg/m2		25 to <30 kg/m2		≥30 kg/m2
	No. of cases	HR* (95% CI)	No. of cases	HR* (95% CI)	No. of cases	HR* (95% CI)
0 to <100	152	Ref.	127	Ref.	133	Ref.
100 to <500	135	0.63 (0.50–0.79)	127	0.82 (0.64–1.04)	120	1.03 (0.80–1.32)
500 to <1,200	146	0.63 (0.50–0.80)	106	0.70 (0.54– 20.90)	56	0.69 (0.51–0.95)
1,200+	142	0.71 (0.56–0.90)	77	0.73 (0.55–0.97)	44	0.99 (0.70–1.39)
p Values for interaction between physical activity and BMI 0.13.

Total physical activity MET-min/wk	Smoking categories
	Never smoker		Former smoker, <10 pack years		Former smoker, ≥10 pack years		Current smoker
	No. of cases	HR* (95% CI)	No. of cases	HR* (95% CI)	No. of cases	HR* (95% CI)	No. of cases	HR* (95% CI)
0 to <100	51	Ref.	16	Ref.	168	Ref.	177	Ref.
100 to <500	55	0.77 (0.52–1.13)	21	0.88 (0.46–1.69)	163	0.76 (0.61–0.94)	143	0.80 (0.64–0.99)
500 to <1,200	42	0.60 (0.40–0.90)	29	1.05 (0.57–1.94)	163	0.67 (0.54–0.83)	74	0.59 (0.45–0.77)
1,200+	42	0.81 (0.54–1.23)	22	0.93 (0.49–1.79)	145	0.73 (0.58–0.92)	54	0.69 (0.51–0.94)
p Values for interaction between physical activity and smoking 0.85.

Total physical activity MET-min/wk	Age groups
	<50 to 59		60–69		70 to 791
	No. of cases	HR* (95% CI)	No. of cases	HR* (95% CI)	No. of cases	HR* (95% CI)
0 to <100	88	Ref.	210	Ref.	114	Ref.
100 to <500	65	0.74 (0.54–1.02)	199	0.80 (0.66–0.97)	118	0.84 (0.65–1.08)
500 to <1,200	43	0.56 (0.39–0.81)	181	0.77 (0.63–0.95)	84	0.61 (0.46–0.81)
1,200+	36	0.62 (0.42–0.93)	141	0.81 (0.65–1.02)	86	0.83 (0.62–1.10)
p Values for interaction between physical activity and age 0.48.