. Author manuscript; available in PMC: 2011 Nov 1.

Published in final edited form as: J Acquir Immune Defic Syndr. 2010 Nov 1;55(3):375–379. doi: 10.1097/QAI.0b013e3181eef4f7

Table 3.

Smoking indirect adjusted hazard rate ratio (HR) of the association between recurrent pneumonia and lung cancer

Prevalence of smoking among individuals with pneumonia^a	Smoking associated RR=21.3^b
	Bias factor	Smoking adjusted HR (95% CI)
0.65	1.08	1.52 (1.00-2.31)
0.70	1.15	1.42 (0.93-2.14)
0.75	1.23	1.33 (0.88-2.03)
0.80	1.31	1.25 (0.83-1.90)
0.90	1.46	1.12 (0.74-1.70)

Prevalence of smokers among individuals without pneumonia was fixed to 0.60

Thun et al.'s estimate for the RR associating smoking with lung cancer in men²⁰ was applied for both men and women, because men comprised the majority of our cohort.