Table 1.
Airborne nicotine concentrations (μg/m3) before and after the implementation of the Smoke-Free Law. Guatemala City
| Before | After | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 6 months | 5 years | |||||||||
| n a | Median (Q1, Q3) | GM (95 % CI) | n | Median (Q1, Q3) | GM (95 % CI) | n | Median (Q1, Q3) | GM (95 % CI) | p b | |
| All | 19 | 0.88 (0.48, 4.80) | 1.31 (0.74, 2.29) | 40 | 0.12 (0.04, 0.25) | 0.09 (0.05, 0.15) | 40 | 0.013 (0.01, 0.76) | 0.073 (0.02, 0.142) | 0.49 |
| Bars | 9 | 4.58 (1.71, 6.45) | 3.02 (1.60, 5.59) | 18 | 0.28 (0.17, 0.66) | 0.32 (0.19, 0.53) | 17 | 0.59 (0.01, 1.45) | 0.232 (<0.01, 0.60) | 0.84 |
| Restaurants | 10 | 0.58 (0.44, 0.71) | 0.56 (0.32, 1.01) | 22 | 0.04 (0.01, 0.11) | 0.03 (0.02, 0.06) | 23 | 0.013 (0.01, 0.09) | 0.03 (0.03, 0.06) | 0.50 |
Q1, Q3 25th and 75th percentiles, CI confidence interval, GM geometric mean, aNumber of monitors, b p values using Kruskal-Wallis test between the last two airborne nicotine measurements