Table 1 Comparison of sociodemographic characteristics of the studied patients (N = 1200)
| Â | Â | Groups | Chi-square test | ||||||
|---|---|---|---|---|---|---|---|---|---|
Medical personnel N = 600 |  | Non-medical personnel N = 600 | Total number N = 1200 | ||||||
N | % | Â | N | % | N | % | P value | ||
Age groups (years) | 18 to < 30 | 22 | 3.6% |  | 9 | 1.5% | 31 | 2.5% | 0.9 |
30 to < 40 | 117 | 19.5% |  | 81 | 13.5% | 198 | 16.5% | 0.79 | |
40 to < 50 | 143 | 23.8% |  | 127 | 21.1% | 270 | 22.5% | 0.57 | |
50 to < 60 | 181 | 30.1% |  | 210 | 35% | 391 | 32.5% | 0.68 | |
60 to < 70 | 70 | 11.6% |  | 85 | 14.1% | 155 | 12.9% | 0.83 | |
70 to < 80 | 67 | 11.1% |  | 88 | 14.6% | 155 | 12.9% | 0.9 | |
Sex | Male | 342 | 57% | Â | 411 | 68.5% | 753 | 62.75% | 0.88 |
Female | 258 | 43% | Â | 189 | 31.5% | 447 | 37.25% | 0.7 | |
Smoking | Yes | 217 | 36% | Â | 497 | 82.% | 714 | 59.5% | *0.004 |
No | 384 | 64% | Â | 103 | 18% | 487 | 40.5% | ||
Occupation | Doctors | 319 | 53.1% | Carpenters | 43 | 7.1% | Â | Â | Â |
Nurses | 110 | 18.3% | Teachers | 269 | 44.8% | Â | Â | ||
Radiographers | 94 | 15.6% | Farmers | 104 | 17.3% | Â | Â | ||
Assistant staff | 77 | 12.8% | Drivers | 184 | 30.6% | Â | Â | ||
Risk factors | Diabetes mellitus | 33 | 5.5% | Â | 170 | 28.33% | 203 | 16.9% | 0.81 |
Bronchial asthma | 197 | 32.83% | Â | 186 | 31% | 383 | 31.9% | 1 | |
Auto-immune disease | 9 | 1.5% | Â | 44 | 7.3% | 53 | 4.4% | 0.77 | |
Obesity (BMI more than 30) | 105 | 17.5% | Â | 141 | 23.5% | 246 | 20.5% | 0.84 | |
No risk factors | 256 | 42.66% | Â | 59 | 9.8% | 315 | 26.2% | *0.04 | |