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. 2007 Feb 14;115(7):996–1001. doi: 10.1289/ehp.9888

Table 1.

Baseline data comparing women > 38 years of age from the RESPIRE-Guatemala trial by whether they participated in the blood pressure study.

Characteristic Participants (n = 120) Nonparticipants (n = 118) p-Valuea
Age (years)b 53.3 ± 12.0 51.2 ± 11.4 0.16
Household characteristics
 Elevation (m) 2,630 ± 187 2,609 ± 184 0.39
 Kitchen volume (m3) 45.6 ± 22.8 49.0 ± 20.9 0.24
 Electricity in house (%) 72 78 0.26
 Radio (%) 93 90 0.37
 Television (%) 25 25 0.94
 Bicycle (%) 28 23 0.34
 Cows (%) 53 49 0.55
 Horses (%) 40 39 0.89
 Sheep (%) 54 47 0.25
Other air pollution sources (%)
Temascal wood-fired sauna 93 91 0.45
 Secondhand tobacco smoke 28 25 0.61
a

Two-sided p-values from t-tests for continuous variables and chi-square tests for categorical variables.

b

Values are mean ± SD for continuous variables.