Table 1.
Distribution of demographic variables and risk factors in esophageal squamous cell cancer cases and cancer-free control subjects
|
Characteristics |
Cases (n = 313) |
Controls (n = 314) |
P
values |
OR (95% CI)* |
||
|---|---|---|---|---|---|---|
| Number | (%) | Number | (%) | |||
|
Age (years) |
|
|
|
|
0.247 |
|
|
<58 |
152 |
(48.6) |
167 |
(53.2) |
|
1 |
|
≥58 |
161 |
(51.4) |
147 |
(46.8) |
|
1.20 (0.88-1.65) |
|
Sex |
|
|
|
|
0.673 |
|
|
Female |
47 |
(15.0) |
51 |
(16.2) |
|
1 |
|
Male |
266 |
(85.0) |
263 |
(83.8) |
|
1.10 (0.71-1.69) |
|
Tobacco smoking |
|
|
|
|
<0.001 |
|
|
Never |
92 |
(29.4) |
158 |
(50.3) |
|
1 |
|
Ever |
221 |
(70.6) |
156 |
(49.7) |
|
2.43 (1.75-3.38) |
|
Alcohol drinking |
|
|
|
|
0.001 |
|
|
Never |
115 |
(36.7) |
156 |
(49.7) |
|
1 |
|
Ever |
198 |
(63.3) |
158 |
(50.3) |
|
1.70 (1.24-2.34) |
|
HPV status |
|
|
|
|
|
|
|
- |
143 |
(45.7) |
178 |
(56.7) |
0.006 |
1 |
| + | 170 | (54.3) | 136 | (43.3) | 1.56 (1.14-2.13) | |
P values for cases vs. controls were calculated with two-sided χ2 tests.
*ORs were assessed in logistic regression models.