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Table 3 Univariate analyses identifying factors associated with ACH in traditional Zulu homes

From: Natural ventilation reduces high TB transmission risk in traditional homes in rural KwaZulu-Natal, South Africa

Variables Coefficient p value(N = 24)
Height of walls 11.57 0.01
Width of room −4.57 0.02
Floor area −0.38 0.01
Volume of room −0.12 0.02
Surface area of walls −0.13 0.62
Door area 8.03 0.21
Window number 2.79 0.09
Window area 5.66 0.05
Combine area of wind/door 5.44 0.02
Wind speed at door 4.08 0.45
Wind speed 10m 0.82 0.83
House Shape 9.69 0.005
Materials of roof 10.43 0.005
  Metal vs. Thatch   
Other ventilation space −1.80 0.75
  Absent vs. Present   
Window area/wall surface 372.65 0.0024
Window area/floor area 145.68 0.0001
Window/volume 414.23 <0.0001
Temperature   
  Inside 0.03 0.96
  Outside −0.43 0.31
  Difference −1.00 0.10
Relative humidity 0.12 0.49
Smoke direction   
  In 5.46 0.40
  Out 8.15 0.26
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