Table 2.
Changes in self-reported respiratory symptoms and doctor-diagnosed asthma between baseline (2008) and follow-up (2013) for current and former hairdressers, Hebron, Palestine
| Current hairdressers n=133 |
Former hairdressers n=28 |
Difference in baseline between current and former hairdressers |
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Symptoms | Baseline n (%) |
Follow-up n (%) |
Difference* | 95% CI |
Baseline n (%) |
Follow-up n (%) |
Difference* | 95% CI |
Difference† | 95% CI |
|||
| Lower | Upper | Lower | Upper | Lower | Upper | ||||||||
| Wheezing | 26 (19) | 27 (20) | +0.008 | −0.025 | +0.040 | 6 (21) | 4 (14) | −0.071 | −0.167 | +0.024 | +0.0187 | −0.144 | +0.182 |
| Chest tightness | 40 (30) | 45 (34) | +0.037 | +0.005 | +0.069 | 13 (46) | 11 (39) | −0.071 | −0.167 | +0.024 | +0.163 | −0.027 | +0.354 |
| Shortness of breath | 33 (25) | 38 (29) | +0.038 | +0.001 | +0.076 | 8 (29) | 6 (21) | −0.071 | −0.167 | +0.023 | +0.037 | −0.140 | +0.216 |
| Morning cough | 20 (15) | 23 (17) | +0.023 | −0.010 | +0.055 | 9 (32) | 8 (29) | −0.036 | −0.104 | +0.033 | +0.171 | +0.016 | +0.326 |
| Morning phlegm | 25 (19) | 34 (26) | +0.068 | +0.020 | +0.115 | 12 (43) | 7 (25) | −0.178 | −0.320 | +0.037 | +0.241 | +0.072 | +0.409 |
| Asthma | 7 (5) | 9 (7) | +0.015 | −0.014 | +0.044 | 3 (11) | 3 (11) | 0 | −0.162 | +0.162 | +0.054 | −0.044 | +0.153 |
*Prevalence difference between baseline and follow-up reported symptoms, using generalised estimating equations.
†Prevalence difference in baseline reported symptoms between current and former hairdressers (former–current), using the generalised linear model.