| List of Symptoms | A18 | A27 | ||||
| Yes | No | Sometimes | Yes | No | Sometimes | |
| Dry skin | 526% | 449% | 25% | 27% | 42% | 31% |
| Cough | 23% | 32% | 45% | 28% | 34% | 38% |
| Dry throat | 33% | 29% | 38% | 38% | 26% | 36% |
| Stuffy nose | 21% | 54% | 25% | 20% | 46% | 34% |
| Itching or burning of eyes | 12% | 60% | 28% | 19% | 52% | 29% |
| Lack of concentration | 62% | 11% | 27% | 58% | 14% | 28% |
| Dizziness | 32% | 38% | 30% | 42% | 31% | 47% |
| Headache | 48% | 13% | 39% | 45% | 15% | 40% |
| Feeling sleepy or tired | 68% | 14% | 18% | 61% | 15% | 24% |
| Feeling heavy headed | 44% | 18% | 38% | 48% | 20% | 32% |
| Fatigue | 42% | 25% | 33% | 45% | 23% | 32% |