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. Author manuscript; available in PMC: 2014 Feb 1.
Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2012 Dec 5;22(2):251–260. doi: 10.1158/1055-9965.EPI-12-1007-T

Table 1.

Demographic, smoking and tumor histology characteristics of African-American lung cancer cases and controls appearing in the association analyses

UCSF (N=879) MDA (N=839) WSU (N=831) Total (N=2549)

Case Control Case Control Case Control Case Control
Sample Size 432 447 473 366 403 428 1308 1241
Mean ± SE
Age 64.36 ± 0.53 64.17 ± 0.54 62.40 ± 0.47 55.41 ± 0.59 62.24 ± 0.51 62.04 ± 0.48 63.0 ± 0.29 60.86 ± 0.33
% African Ancestry 0.75 ± 0.007 0.76 ± 0.006 0.76 ± 0.007 0.76 ± 0.008 0.78 ± 0.006 0.77 ± 0.006 0.76 ± 0.004 0.76 ± 0.004
% EuropeanAncestry 0.19 ± 0.006 0.19 ± 0.007 0.18 ± 0.006 0.18 ± 0.008 0.17 ± 0.006 0.17 ± 0.006 0.18 ± 0.004 0.18 ± 0.004
Pack-years smokeda 33.39 ± 1.15 27.39 ± 1.74 39.92 ± 1.37 24.66 ± 1.32 39.17 ± 1.45 30.65 ± 3.52 37.45 ± 0.77 27.65 ± 1.41
n (%)
Male 196 (45.37) 204 (45.64) 251 (53.07) 154 (42.08) 193 (47.89) 195 (45.56) 640 (48.93) 553 (44.56)
Ever Smoker 403 (93.29) 289 (64.65) 397 (83.93) 270 (73.77) 382 (94.79) 294 (68.69) 1182 (90.37) 853 (68.73)
Current smoker 181 (41.90) 134 (29.98) 246 (52.01) 143 (39.07) 241 (59.80) 171 (39.95) 668 (51.07) 448 (36.10)
Adenocarcinoma 176 (40.74) NA 215 (45.45) NA 167 (41.44) NA 558 (42.66) NA
Squamous cell 107 (24.77) NA 131 (27.70) NA 105 (26.05) NA 343 (26.22) NA
Small Cell 34 (7.87) NA 24 (5.07) NA 29 (7.20) NA 87 (6.65) NA
Other/Not specified 115 (26.62) NA 103 (21.78) NA 102 (25.31) NA 320 (24.46) NA
a

among ever-smokers

Abbreviations: UCSF, University of California San Francisco; MDA, M. D. Anderson Cancer Center; WSU, Wayne State University