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Table 2 Distribution of indoor air pollution concentrations in 617 houses in Peru, by site and use of biomass cookstoves

From: Indoor air pollution concentrations and cardiometabolic health across four diverse settings in Peru: a cross-sectional study

 LimaTumbesPuno CityPuno RuralAll Biomass UsersAll Non-biomass Users
 N or
Mean (SD)
N or
Mean (SD)
N or
Mean (SD)
N or
Mean (SD)
N or
Mean (SD)
N or
Mean (SD)
Number of households10592166254  
PM2.5μg/m324-h means
 Mean (SD)42.8 (12.4)37.6 (12.1)16.3 (10.3)99.6 (102.0)92.1 (98.1)29.2 (20.5)
 Geometric mean (GSD)41.1 (1.3)35.8 (1.4)14.1 (1.7)58.8 (3.1)55.0 (2.9)23.7 (2.0)
 Daily hours > 25 μg/m320.7 (4.3)18.3 (6.2)3.6 (3.1)5.0 (3.1)6.5 (5.8)11.6 (9.1)
 Spearman correlation:
Daily mean vs. hrs. >  25 μg/m3
0.870.820.910.590.470.95
CO ppm 24-h means
 Mean (SD)1.3 (0.9)0.9 (0.6)1.9 (3.2)12.1 (17.9)10.8 (17.2)1.5 (2.4)
 Geometric mean (GSD)1.0 (2.0)0.8 (1.6)1.2 (2.3)4.9 (4.3)4.0 (4.4)1.0 (2.1)
 Daily hours > 5.68 ppm0.2 (0.5)0.3 (0.9)1.3 (2.6)6.0 (6.7)5.4 (6.6)0.8 (1.9)
Spearman correlation:
Daily mean vs. hrs. >  5.68 ppm
0.510.490.910.920.930.73