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Table 1 Baseline demographic and clinical characteristics of 1052 Chinese men with lung cancer, grouped by level of alcohol consumption and consumption of preserved or fried food
| Characteristica | Alcoholb | Preserved or fried foodc | |||
|---|---|---|---|---|---|
| Never (n = 391) | Occasional (n = 289) | Frequent (n = 372) | Occasional (n = 768) | Frequent (n = 284) | |
| Age group (years) | |||||
| <50 | 33 (8.4) | 28 (9.7) | 18 (4.8) | 65 (8.5) | 20 (7.0) |
| 50–59 | 62 (15.9) | 58 (20.1) | 62 (16.7) | 142 (18.5) | 39 (13.7) |
| 60–69 | 144 (36.8) | 97 (33.6) | 127 (34.2) | 272 (35.5) | 92 (32.4) |
| ≥70 | 152 (38.9) | 106 (36.7) | 164 (44.2)^ | 288 (37.5) | 133 (46.8)^ |
| District of residence | |||||
| New Territories | 65 (17.3) | 49 (17.3) | 50 (13.9) | 126 (16.9) | 38 (13.9) |
| Kwai Tsing | 30 (8.0) | 30 (10.6) | 34 (9.5) | 67 (9.0) | 27 (9.9) |
| Wong Tai Sin | 68 (18.1) | 58 (20.5) | 67 (18.7) | 147 (19.7) | 46 (16.8) |
| Kowloon City | 41 (10.9) | 50 (17.7) | 36 (10.0) | 95 (12.8) | 32 (11.7) |
| Yau Tsim Moog | 27 (7.2) | 20 (7.1) | 40 (11.1) | 65 (8.7) | 22 (8.1) |
| Sham Shui Po | 59 (15.7) | 26 (9.2) | 58 (16.2) | 98 (13.2) | 45 (16.5) |
| Others | 86 (22.9) | 50 (17.7) | 74 (20.6)^ | 147 (19.7) | 63 (23.1) |
| Education level | |||||
| Primary school | 102 (26.2) | 50 (17.3) | 110 (29.6) | 179 (23.4) | 84 (29.6) |
| Middle school | 162 (41.5) | 134 (46.4) | 168 (45.3) | 326 (42.6) | 136 (47.9) |
| College or above | 126 (32.3) | 105 (36.3) | 93 (25.1)^ | 261 (34.1) | 64 (22.5)^ |
| Marital status | |||||
| Married | 62 (15.9) | 44 (15.2) | 68 (18.3) | 130 (16.9) | 45 (15.8) |
| Others | 329 (84.1) | 245 (84.8) | 304 (81.7) | 638 (83.1) | 239 (84.2) |
| Family income (Hong Kong dollars/month) | |||||
| <4000 | 228 (58.6) | 161 (55.7) | 252 (67.7) | 457 (59.7) | 184 (64.8) |
| ≥4000 | 100 (25.7) | 88 (30.4) | 79 (21.2) | 198 (25.8) | 69 (24.3) |
| Unknown | 61 (15.7) | 40 (13.8) | 41 (11.1)^ | 111 (14.5) | 31 (10.9) |
| Smoking status d | |||||
| Never | 60 (15.4) | 34 (11.8) | 21 (5.6) | 103 (13.4) | 13 (4.6) |
| Former | 99 (25.4) | 90 (31.1) | 109 (29.3) | 208 (27.1) | 87 (30.6) |
| Current | 231 (59.2) | 165 (57.1) | 242 (65.1)^ | 456 (59.5) | 184 (64.8)^ |
| Cancer history in first-degree relatives | |||||
| No | 262 (67.2) | 189 (65.4) | 232 (62.5) | 476 (62.1) | 206 (72.5) |
| Yes | 68 (17.4) | 65 (22.5) | 80 (21.6) | 161 (21.1) | 48 (16.9) |
| Not sure | 60 (15.4) | 35 (12.1) | 59 (15.9) | 129 (16.8) | 30 (10.6)^ |
| Charlson comorbidity index | |||||
| 0–2 | 384 (98.2) | 287 (99.3) | 364 (97.8) | 753 (98.0) | 282 (99.3) |
| 3–6 | 7 (1.8) | 2 (0.7) | 8 (2.2) | 15 (2.0) | 2 (0.7) |
| Stage at diagnosis | |||||
| I | 52 (13.3) | 30 (10.4) | 36 (9.7) | 90 (11.7) | 28 (9.9) |
| II | 11 (2.8) | 17 (5.9) | 20 (5.4) | 34 (4.4) | 16 (5.6) |
| III | 105 (26.9) | 92 (31.8) | 129 (34.7) | 243 (31.6) | 80 (28.2) |
| IV | 118 (30.2) | 79 (27.3) | 94 (25.3) | 219 (28.5) | 72 (25.3) |
| Unknown | 105 (26.9) | 71 (24.6) | 93 (25.0) | 182 (23.7) | 88 (31.0) |
| Treatment | |||||
| Surgery | 26 (6.6) | 20 (6.9) | 37 (9.9) | 57 (7.4) | 20 (7.0) |
| Chemotherapy | 52 (13.3) | 40 (13.8) | 38 (10.2) | 94 (12.2) | 34 (12.0) |
| Radiotherapy | 79 (20.2) | 49 (17.0) | 76 (20.4) | 140 (18.2) | 62 (21.8) |
| Others | 8 (2.0) | 7 (2.4) | 14 (3.8) | 18 (2.3) | 11 (3.9) |
| No treatment | 122 (31.2) | 95 (32.9) | 106 (28.5) | 233 (30.3) | 88 (31.0) |
| Combination | 104 (26.6) | 78 (27.0) | 101 (27.2) | 226 (29.4) | 69 (24.3) |
| BMI e (mean ± SD) | 21.2 ± 3.3 | 21.3 ± 3.1 | 21.1 ± 3.3 | 21.4 ± 3.2 | 20.7 ± 3.2* |
