Table 1.
Participant characteristics, Japan, 2022 (N=657)
| Characteristics | Total n | All (N=657) Median (IQR) | Never smokers (N=178) Median (IQR) | Cigarette smokers (N=242) Median (IQR) | HTP smokers (N=237) Median (IQR) | p |
|---|---|---|---|---|---|---|
| Age (years) | ||||||
| Males | 322 | 53.0 (48.0–62.0) | 53.0 (47.5–62.0) | 54.0 (48.0–61.0) | 53.0 (47.8–62.0) | 0.912 |
| Females | 335 | 52.0 (46.0–60.0) | 54.0 (47.0–61.0) | 53.0 (46.0–61.0) | 51.0 (46.0–57.0) | 0.155 |
| Height (cm) | ||||||
| Males | 89 | 170.0 (168.0–174.1) | 169.9 (167.0–174.5) | 171.0 (168.0–174.7) | 171.0 (168.0–174.0) | 0.472 |
| Females | 89 | 158.0 (155.0–161.5) | 157.0 (153.0–161.8) | 158.7 (155.0–161.0) | 158.0 (156.0–162.0) | 0.188 |
| Weight (kg) | ||||||
| Males | 115 | 66.0 (60.4–73.1) | 67.0 (60.0–74.3) | 65.0 (60.0–72.8) | 67.0 (62.9–73.6) | 0.427 |
| Females | 127 | 51.0 (46.0–56.0) | 51.0 (46.0–56.7) | 50.4 (45.0–55.5) | 50.3 (46.8–56.0) | 0.813 |
| BMI (kg/m2) | ||||||
| Males | 118 | 22.8 (21.1–24.8) | 23.0 (20.8–25.4) | 22.3 (20.8–24.2) | 23.1 (21.4–25.2) | 0.119 |
| Females | 119 | 20.2 (18.7–21.9) | 20.6 (18.9–22.7) | 20.1 (18.4–22.0) | 20.0 (18.8–21.6) | 0.336 |
BMI: body mass index. HTP: heated tobacco product. IQR: interquartile range. Data were tested using the Shapiro-Wilk normality test, and a normal distribution was not found. Therefore, data are presented as median (IQR). The Kruskal-Wallis test and Bonferroni correction were used to assess significant intergroup differences in characteristics. Statistical significance was set at p<0.05.