Table 2 Urinary geometric mean (GM) concentration of creatinine(μg/g creatinine) categorized by public transportation usage
From: Female non-smokers’ environmental tobacco smoking exposure by public transportation mode
| Crude | Adjusteda | |||||||
|---|---|---|---|---|---|---|---|---|
| Category | N(%) | GM(±SE) | 95% CI | p-value | GM(±SE) | 95% CI | p-value | |
| Modes of transportation | ||||||||
| Subway | 262(19.8) | 1.66(1.06) | 1.48–1.85 | .401 | 1.72(1.06) | 1.54–1.92 | .499 | |
| Bus | 1002(75.8) | 1.77(1.03) | 1.67–1.87 | 1.75(1.03) | 1.65–1.85 | |||
| Taxi | 58(4.4) | 1.94(1.13) | 1.53–2.46 | 2.00(1.12) | 1.59–2.52 | |||
| Using frequency(per week) | ||||||||
| 1–6 | 826(62.5) | 1.72(1.03) | 1.62–1.83 | .675 | 1.73(1.03) | 1.63–1.84 | .774 | |
| 7–13 | 414(31.3) | 1.80(1.05) | 1.65–1.97 | 1.80(1.05) | 1.65–1.96 | |||
| ≥14 | 82(6.2) | 1.80(1.11) | 1.48–2.20 | 1.77(1.10) | 1.46–2.15 | |||