Table 3.
Logistic regression analysis of independent variables associated with COVID-19 severity, Tehran, 2020–2021
| Variable | AOR | 95% CI | P value | |
|---|---|---|---|---|
| Lower | Upper | |||
| Age group (years) | ||||
| 15–24 | 1 | |||
| 25–34 | 0.89 | 0.814 | 0.981 | 0.01 |
| 35–44 | 0.93 | 0.854 | 1.020 | 0.12 |
| Pregnancy status | ||||
| Non-pregnant women | 1 | |||
| Pregnant women | 1.38 | 1.223 | 1.564 | <0.001 |
| Positive history of smoking | 1.50 | 1.092 | 2.065 | 0.01 |
| Positive history of opioids | 3.85 | 2.642 | 5.624 | <0.001 |
| Diabetes | 2.31 | 2.043 | 2.630 | <0.001 |
| Hypertension | 1.58 | 1.356 | 1.840 | <0.001 |
| CVD | 2.93 | 2.546 | 3.385 | <0.001 |
| Cancer | 3.53 | 2.933 | 4.252 | <0.001 |
| Asthma | 1.48 | 1.158 | 1.904 | 0.002 |
| Chronic liver diseases | 2.70 | 1.920 | 3.799 | <0.001 |
| Chronic kidney diseases | 2.50 | 2.003 | 3.123 | <0.001 |
| Chronic neurological diseases | 2.83 | 2.193 | 3.652 | <0.001 |
| Chronic immune deficiency diseases | 1.75 | 1.261 | 2.443 | <0.001 |
| Chronic haematological diseases | 1.82 | 1.366 | 2.432 | <0.001 |
| Constant | 0.07 | |||
AOR: Adjusted odds ratio; CI: Confidence interval; CVD: Cardiovascular diseases; COVID-19: Coronavirus disease 2019.