Table 3.
Risk factors associated to PEARTI (Univariate analysis)
| N events | Person years | Rate (per 100 person years) | Hazard ratio 95% confidence interval | p | |
|---|---|---|---|---|---|
| Age (for each year increase) |
9 |
NA |
NA |
HR 1.12; 95% CI 1.03-1.22 |
0.01 |
| Age at hire (for each year increase) |
9 |
NA |
NA |
HR 1.008; 95% CI 0.93-1.09 |
0.83 |
| Time since hire (for each year increase) |
9 |
NA |
NA |
HR 1.06; 95% CI 0.99-1.13 |
0.08 |
| Gender (male vs female) |
F 6 |
24.5 |
32.7 |
HR 0.29; 95% CI 0.04-2.35 |
0.25 |
| M 3 |
10 |
10.3 |
|||
| Profession (physician vs nurse) |
Nurse 7 |
23.8 |
33.64 |
HR 0.45; 95% CI 0.09-2.17 |
0.32 |
| Physician 2 |
11.8 |
16.9 |
|||
| Sputum smear of the index case (positive vs negative)* |
Negative 6 |
14.7 |
20.5 |
HR 1.59; 95% CI 0.04-6.3 |
0.58 |
| Positive 3 |
19.6 |
30.7 |
|||
| History of BCG (positive vs negative) |
Negative 3 |
19.7 |
15.3 |
HR 2.84; 95% CI 0.71-11.34 |
0.14 |
| Positive 6 | 14.6 | 41.25 |
*The sputum smear result of the index case who was in contact with HCWs tested positive at T2.