Table 1 Sample size determination for associated factors for chronic respiratory symptoms
No- | Associated factors | Proportion of population with respiratory symptoms (p) | Odds ratio | Sample size obtained |
|---|---|---|---|---|
1 | Utilization of personal protective equipment (PPE) | 55 % | 2.04 | 380 |
2 | Training on respiratory health and safety | 51 % | 0.18 | 384 |
3 | Educational level | 31 % | 0.15 | 328 |