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Table 1 Summary of reported building visits, by building type and country

From: Comparison of indoor contact time data in Zambia and Western Cape, South Africa suggests targeting of interventions to reduce Mycobacterium tuberculosis transmission should be informed by local data

  

Western Cape

Zambia

p-value

Proportion of respondents who left their home

56 % (51 % - 61 %)

59 % (53 %–64 %)

0.5

Number of buildings visited yesterday (if left home)

0

0.90 % (0.23 %–3.5 %)

3.6 % (1.9 %–6.7 %)

<0.0001

1

82 % (77 %–86 %)

58 % (51 %–65 %)

 

2

14 % (10 %–18 %)

26 % (22 %–31 %)

 

3+

3.8 % (2.3 %–6.0 %)

12 % (9.5 %–16 %)

 

Proportion of respondents who visited:

Other homes

23 % (20 %–26 %)

19 % (16 %–23 %)

0.2

Shops

8.2 % (5.8 %–12 %)

19 % (16 %–22 %)

<0.0001

Churches

5.2 % (3.3 %–8.1 %)

12 % (9.3 %–15 %)

0.001

Bars

2.3 % (1.4 %–3.8 %)

7.3 % (5.6 %–9.5 %)

*

Schools

3.7 % (2.7 %–5.1 %)

4.1 % (3.2 %–5.2 %)

0.7

Clinics

1.6 % (1.0 %–2.5 %)

2.8 % (1.9 %–3.9 %)

0.07

Hairdressers

0.70 % (0.34 %–1.5 %)

1.5 % (0.92 %–2.3 %)

0.08

Work

16 % (13 %–19 %)

6.3 % (5.1 %–7.8 %)

<0.0001

Other

3.7 % (2.5 %–5.3 %)

8.4 % (6.4 %–11 %)

0.001

Mean visit duration (hours) to:

Other homes

3.5 (2.9–4.2)

2.4 (1.8–2.9)

0.009

Shops

1.2 (0.84–1.5)

0.86 (0.61–1.1)

0.1

Churches

2.7 (2.3–3.0)

2.8 (2.5–3.0)

0.8

Bars

3.6 (2.5–4.6)

3.0 (2.6–3.4)

 

Schools

4.5 (3.6–5.4)

4.6 (3.8–5.5)

0.8

Clinics

3.5 (2.3–4.7)

2.4 (1.9–2.8)

0.09

Hairdressers

3.7 (1.7–5.8)

2.5 (1.4–3.6)

0.3

Work

7.1 (6.7–7.5)

7.0 (6.0–8.0)

0.9

Other

4.0 (2.6–5.3)

2.3 (1.7–2.9)

0.03

Mean number of adults/youths present per visit to:

Other homes

4.0 (3.3–4.8)

5.5 (4.6–6.4)

0.01

Shops

16 (12–19)

8.4 (6.8–10)

0.0002

Churches

27 (24–29)

24 (23–25)

0.05

Bars

20 (16–23)

22 (20–24)

*

Schools

24 (21–28)

25 (22–28)

0.8

Clinics

26 (23–30)

23 (20–25)

0.1

Hairdressers

3.9 (1.8–6.1)

8.1 (4.9–11)

0.04

Work

14 (12–16)

15 (12–18)

0.5

Other

17 (13–22)

13 (11–15)

0.1

Mean number of children present per visit to:

Other homes

2.9 (2.4–3.4)

3.2 (2.7–3.8)

0.4

Shops

8.6 (5.8–11)

4.8 (3.7–5.9)

0.01

Churches

18 (12–24)

18 (15–20)

0.8

Bars

3.2 (1.6–4.7)

3.6 (2.9–4.3)

*

Schools

3.9 (2.2–5.7)

8.4 (5.3–11)

0.01

Clinics

19 (13–24)

16 (12–19)

0.4

Hairdressers

2.0**

3.7 (2.1–5.2)

0.04

Work

4.4 (3.3–5.5)

5.1 (3.4–6.6)

0.5

Other

4.8 (2.2–7.5)

7.4 (5.2–9.6)

0.1

  1. p-values in bold indicate significance at the 95 % level. All values are weighted, as described in the methods. *Estimates for bars in Western Cape are considered to be unreliable (see discussion), and therefore p-values are not shown. ** Confidence intervals could not be calculated due to low numbers