Table 2. Comparisons of mean knowledge score with demographic characteristics.
| Demographic characteristics | Mean | SD | p-value |
|---|---|---|---|
| Gender | |||
| Male | 9.45 | 2.834 | 0.86 |
| Female | 9.51 | 2.958 | |
| Age in years | |||
| 15-30 | 9.04 | 2.881 | 0.04 |
| 30-45 | 10.01 | 2.646 | |
| 45-60 | 9.77 | 3.320 | |
| Education level | |||
| Primary/Secondary | 9.75 | 2.8 | 0.137 |
| College graduate | 9.06 | 2.91 | |
| Postgraduate | 10.5 | 2.88 | |
| Doctorate | 8.7 | 2.71 | |
| Working status | |||
| Yes (working from home) | 9.78 | 2.879 | 0.029 |
| No | 8.02 | 2.850 | |
| Monthly income | |||
| Less than 30K | 9.32 | 2.83 | 0.627 |
| 30K to 50K | 9.44 | 2.6 | |
| More than 50K | 10.1 | 3.62 | |
| Smoking status | |||
| Yes | 9.7 | 2.90 | 0.318 |
| No | 9.4 | 2.86 | |
| Occasional smoker | 9.75 | 3.07 | |
| Past smoker | 11.30 | 2.53 | |
| Health background | |||
| Respiratory disease or any allergy | |||
| Yes | 9.74 | 2.944 | 0.32 |
| No | 9.35 | 2.868 | |
| Seasonal/medicinal allergy | 10.44 | 2.80 | |
| Underlying medical condition/systemic diseases | |||
| Fit and healthy | 9.42 | 2.678 | 0.203 |
| Heart disease | 9.00 | 0.000 | |
| Hypertension | 8.75 | 3.130 | |
| Arthritis | 12.00 | 3.633 | |
| Any other disease | 9.67 | 3.541 | |