Table 1 Demographic variables in the case and control groups
From: Is opium use associated with an increased risk of lung cancer? A case-control study
Variable | Lung Cancers | Matched Controls | P-value* |
|---|---|---|---|
N | 140 | 280 | |
Gender | |||
 Male | 96 (68.57) | 192 (68.57) | 1.0 |
 Female | 44 (31.43) | 88 (31.43) |  |
Marital status | |||
 Married | 135 (96.43) | 273 (97.50) | 0.53 |
 Single | 5 (3.57) | 7 (2.50) |  |
Age | |||
  ≤ 50 | 35 (25.0) | 78 (27.86) | 0. 63 |
 51–70 | 85 (60.71) | 170 (60.71) |  |
 > 70 | 20 (14.29) | 32(11.43) |  |
Education | |||
 Illiterate or Elementary Education | 87 (62.14) | 68 (24.29) | 0.001 |
 Middle or High school | 42 (30.0) | 138 (49.22) |  |
 High School Diploma or above | 11 (7.86) | 74 (26.43) |  |