Average daily consumption of tobacco products in the past 30 days according to different tobacco product use
| n | Number of CCs or sticks equivalent consumed* Mean (SD) | Crude coefficient (95% CI)† | Adjusted coefficient (95% CI)†‡ | |
| CCs consumed on average daily (n=2939)§ | ||||
| CC | 2542 | 11.5 (6.6) | Ref | Ref |
| CC+HTP | 147 | 7.7 (5.6) | −3.78 (−4.88 to −2.68)*** | −2.79 (−3.90 to −1.69)*** |
| CC+EC | 189 | 8.8 (6.7) | −2.64 (−3.62 to −1.67)*** | −1.34 (−2.34 to −0.34)** |
| Triple | 61 | 9.2 (6.9) | −2.24 (−3.92 to −0.56)** | −1.29 (−3.00 to 0.41) |
| Sticks equivalent total tobacco consumed on average daily (n=3040)§ | ||||
| CC | 2542 | 11.5 (6.6) | Ref | Ref |
| HTP | 115 | 8.3 (4.5) | −3.14 (−4.41 to −1.87)*** | −2.23 (−3.49 to −0.97)*** |
| EC | 54 | 9.1 (8.6) | −2.35 (−4.18 to −0.51)* | −1.78 (−3.62 to 0.07)¶ |
| CC+HTP | 137 | 13.3 (7.4) | 1.85 (0.69 to 3.02)** | 2.79 (1.61 to 3.96)*** |
| CC+EC | 141 | 12.1 (8.4) | 0.67 (−0.48 to 1.83) | 1.95 (0.79 to 3.12)** |
| HTP+EC | 9 | 14.8 (12.1) | 3.38 (−1.07 to 7.83) | 3.97 (−0.36 to 8.29)¶ |
| Triple | 42 | 14.6 (9.2) | 3.19 (1.12 to 5.27)** | 4.54 (2.49 to 6.60)*** |
*P<0.05; **p<0.01; ***p<0.001.
*One session of EC use was defined as 15 puffs or 10 min of use, which was assumed to be equivalent to one stick of cigarette. One tobacco stick of HTPs was assumed to be equivalent to one cigarette based on the number of puffs.
†Linear regression model was used.
‡Adjusted for sex, age, marital status, education level and household income.
§The numbers in some groups were smaller in the latter analyses due to missing information on consumption of alternative tobacco products.
¶P<0.1.
CC, conventional cigarette; EC, electronic cigarette; HTP, heated tobacco product.