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Table 2 Prevalence of respiratory symptoms in the study population

From: Occupation exposed to road-traffic emissions and respiratory health among Congolese transit workers, particularly bus conductors, in Kinshasa: a cross-sectional study

Symptoms

n (%)

Bus conductors

n = 110

Bus drivers

n = 107

Taxi motorcyclists

n = 102

High school teachers

n = 106

p value

Cough

 Morning cough

11 (10)

13 (12.1)

9 (8.8)

5 (4.7)

0.281

 At least 4 days a week

49 (44.5)

45 (24)

36 (35.2)

15 (14.1)

<0.001

Phlegm

 Morning phlegm

26 (23.6)

19 (17.7)

24 (23.5)

5 (4.7)

<0.001

 At least 4 days a week

45 (40.9)

35 (32.7)

27 (26.4)

9 (8.4)

<0.001

 Wheezing > 16y old

25 (22.7)

5 (4.6)

7 (6.8)

8 (7.5)

<0.001

 Short breath

30 (27.2)

38 (35.5)

43 (42.1)

17 (16)

<0.001

 Chest pain

19 (17.2)

0 (0.0)

0 (0.0)

14 (13.2)

<0.001

 Restrictive syndrome

26 (27.3)

22 (23.2)

29 (30.4)

14 (14.7)

0.061

 Mixed syndrome

16 (21.9)

8 (10.9)

10 (15.4)

6 (7.1)

0.042

 Obstructive syndrome

7 (10.9)

6 (9.1)

6 (9.8)

3 (3.7)

0.372

  1. Chi square test, y year, % percent, p < 0.05