From: Smoking, cessation and expenditure in low income Chinese: cross sectional survey
 |  | Urban | Rural | Migrant | |||
---|---|---|---|---|---|---|---|
 |  | M | F | M | F | M | F |
 |  | n = 843 | n = 1115 | n = 749 | n = 1160 | n = 2198 | n = 1050 |
Smoking behaviour | Never | 27 | 97 | 28 | 98 | 36 | 97 |
 | Have quit | 8.7 | 0.5 | 7 | 0.3 | 9.5 | 0.4 |
 | <6/week | 6.2 | 1.3 | 1.1 | 0.2 | 4.0 | 1.0 |
 | 1–3/day | 12 | 0.9 | 4.5 | 0.5 | 22 | 1.0 |
 | 4–9/day | 16 | 0.6 | 10 | 0.3 | 11 | 0.4 |
 | 10–20/day | 22 | 0.2 | 27 | 0.2 | 13 | 0.2 |
 | >20/day | 7.8 | 0.3 | 22 | 0.1 | 4.7 | 0 |
Smoking behaviour aggregates | Current | 58 | 2.0 | 64 | 1.1 | 51 | 1.6 |
 | Moderate/heavy | 30 | 0.5 | 49 | 0.3 | 18 | 0.2 |