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. Author manuscript; available in PMC: 2018 Apr 20.
Published in final edited form as: Environ Res Lett. 2018 Apr 17;13(4):045011. doi: 10.1088/1748-9326/aab047

Table 1.

Summary statistics: Baseline results

a. Dependent Variables: Health symptoms of children under 5 years (N=694)

HAP-related %
Respiratory infection 12.25
Illness with cough 36.17
Difficulty breathing 20.17
Dry eyes 14.41
Other
Illness with fever 29.11

b. Independent Variables

Mean SD N
Household characteristics
Per capita monthly total expenditures (in RWF) [1RWF=0.0012 USD] 56,550.80 40,584.28 529
Household size (mean) 5.94 2.6 529
Most used stove for cooking in the past 30 days (%)
 Traditional 3 stone (open fire) 2.84 529
 Portable charcoal stove 73.16 529
 Fixed charcoal stove 21.17 529
 Improved stove (Electric stove, gas cooker, biogas) 2.83 529
Per capita weekly charcoal use (in kgs) 2.97 2.39 529
Main respondent characteristics
Age (in years) 33.56 10.57 529
Female (%) 88.66 529
Education level (%)
 No education 6.05 529
 Pre-primary or primary 19.28 529
 Secondary 42.16 529
 University 32.51 529
Awareness that smoke from burning biomass is harmful to human health (%) 61.06 529
Child characteristics
Age (in months) 27.18 16.28 694
Female (%) 49.42 694
Availability of health card for child (%) 91.93 694
Housing structure
Dwelling type (%)
 Single house 15.31 529
 Multiple house 5.67 529
 Group of multiple enclosed dwellings 57.66 529
 Group of single enclosed dwellings 21.36 529
Cooking location (%)
 Fully outdoors 12.67 529
 Partially outdoors 10.78 529
 Kitchen structure outside dwelling 55.2
 Cooking inside dwelling 21.36 529
Cooking area structure
Main material used in floors of cooking area (%)
 Beaten earth 17.96 529
 Clay tiles, bricks and other materials 40.45 529
 Cement 41.59 529
Kitchen roof presence (%) 70.34 462
Gap between walls and ceiling (%) 18.83 462
Number of windows (mean) 0.66 0.66 462
Ventilation holes (%) 42.6 462
Presence of active chimney to remove smoke (%) 4.3 462
Household environmental exposure
Nearest distance to any road (in meters) 8.83 8.09 529
Nearest distance to paved road (in meters) 11.48 12.65 529
Nearest distance to unpaved road (in meters) 11.92 13.47 529
Adjacent tree cover (in %) 7.33 2.23 529
Primary caregiver* exposure concentration
Daily average CO concentration (in ppm) 6.77 9.42 282
*

These are unique primary caregivers of children under 5, who are also primary cooks in the household.