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Table 1 Airborne nicotine concentrations (μg/m3) before and after the implementation of the Smoke-Free Law. Guatemala City

From: Compliance to the smoke-free law in Guatemala 5-years after implementation

  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
  1. 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