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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