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Table 4 Video questionnaire responses: current study versus Cape Town ISAAC Phase III*, ages 13 to 14 years

From: Meteorologically estimated exposure but not distance predicts asthma symptoms in schoolchildren in the environs of a petrochemical refinery: a cross-sectional study

Video Question

N

Recent

% (n)

Frequent

% (n)

Wheezing at rest

Current study

823

17.1 (141)

8.1 (67)

2002 ISAAC

270

8.9 (24)

4.1 (11)

OR**(95% CI)

 

2.12 (1.34-3.35)

2.09 (1.09-4.01)

Waking with wheezing at night

Current study

815

27.4 (224)

15.5 (127)

2002 ISAAC

270

4.1 (11)

2.2 (6)

OR (95% CI)

 

8.92 (4.79-16.63)

8.12 (3.54 - 18.65)

Waking with coughing at night

Current study

817

18.2 (149)

7.2 (59)

2002 ISAAC

270

12.9 (35)

4.8 (13)

OR (95% CI)

 

1.50 (1.01-2.23)

1.54 (0.83-2.86)

Distressing wheeze at rest

Current study

815

8.8 (72)

4.0 (33)

2002 ISAAC

270

5.9 (16)

1.9 (5)

OR (95% CI)

 

1.54 (0.88-2.69)

2.24 (0.86 - 5.79)

  1. Recent: in the last 12 months. Frequent: at least monthly in the last 12 months.
  2. * Higher socioeconomic status areas.
  3. **Odds ratio with 95% confidence interval: 2002 study as referent.