From: Self-reported data in environmental health studies: mail vs. web-based surveys
Health Symptoms | % Mail a | % Web a | Crude OR [95%CI] b,c | Adj. OR [95%CI] c,d |
---|---|---|---|---|
Nose irritation | 22.0 | 19.6 | 1.20 [0.85–1.69] | 1.28 [0.89–1.85] |
Blocked nose | 25.8 | 24.0 | 1.15 [0.83–1.58] | 1.39 [0.98–1.96]* |
Runny nose | 32.1 | 33.1 | 1.00 [0.75–1.34] | 1.17 [0.85–1.60] |
Chest wheezing | 9.4 | 9.1 | 1.07 [0.66–1.72] | 1.19 [0.71–2.01] |
Breathing problems | 7.5 | 5.1 | 1.55 [0.85–2.83] | 1.56 [0.81–2.99] |
Eyes irritation | 31.2 | 23.6 | 1.53 [1.12–2.11]** | 1.46 [1.04–2.05]** |
Cough | 27.9 | 20.4 | 1.58 [1.14–2.21]** | 1.68 [1.17–2.40]** |
Throat Irritation | 18.8 | 17.5 | 1.14 [0.80–1.63] | 1.40 [0.95–2.06]* |
Hoarseness | 9.2 | 5.8 | 1.70 [0.97–2.98]* | 2.00 [1.09–3.69]** |
Bodily pain | 34.9 | 30.2 | 1.30 [0.97–1.75]* | 1.36 [0.98–1.87]* |