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Table 2 Effect of the improved cookstove intervention on the concentration of household air pollution in micrograms per cubic meter of sampled air

From: Biomass-fuelled improved cookstove intervention to prevent household air pollution in Northwest Ethiopia: a cluster randomized controlled trial

Parameters B S.E. 95% Wald C.I. P value
Lower Upper
Treatment arm Intervention − 342.992 3.7307 − 350.304 − 335.680 .0001*
Control 1     
Baseline indoor PM2.5 concentration in μg/m3 0.765 0.0078 0.750 0.781 .0001*
Location of main cooking quarter Inside living house 1     
Separate kitchen − 6.994 4.0553 − 14.942 0.954 .085
Secondary cookstove type Traditional 1     
Improved − 16.976 7.6349 − 31.941 − 2.012 .026*
Frequency of injera baking event Everyday 1     
Every other or more days − 42.656 6.7964 − 55.976 − 29.335 .0001*
  1. *Significantly associated at p value < 0.05