TABLE 2.
Withdrawal symptoms in smokers and ex-smokers.
| Withdrawal symptoms | Current smokers (n = 19,643) | Ex-smoker (n = 2,472) | p |
| Urge-to-smoke | 6,680 (34.01%) | 616 (24.92%) | <0.001 |
| Restlessness | 5,269 (26.82%) | 435 (17.60%) | <0.001 |
| Anxiety | 4,131 (21.03%) | 381 (15.41%) | <0.001 |
| Difficulty concentrating | 3,768 (19.18%) | 303 (12.26%) | <0.001 |
| Irritability/Frustration/Anger | 2,459 (12.52%) | 251 (10.15%) | <0.001 |
| Depression | 2,672 (13.60%) | 217 (8.78%) | <0.001 |
| Sleep disturbance | 1,117 (5.69%) | 100 (4.05%) | <0.001 |
| Tiredness | 1,795 (9.14%) | 156 (6.31%) | 0.001 |
| Increased appetite/Weight gain | 1,252 (6.37%) | 295 (11.93%) | <0.001 |
| Mouth ulcers | 276 (1.41%) | 47 (1.90%) | 0.053 |
| Constipation | 172 (0.88) | 32 (1.29) | 0.040 |
| Others | 1,225 (6.24%) | 172 (6.96%) | 0.172 |
Data are shown as number (%).