Table 5.
Main determinants of acquiring an abnormal PCQ score 1 during follow-up (multivariate analysis, logistic regression model; n = 832)
| Variables | |||
|---|---|---|---|
| OR | [95% CI] | P value | |
| Gender | |||
| Males | 1 | reference | |
| Females | 0.88 | [0.42-1.85] | 0.7340 |
| Age | |||
| < 60 years | 1 | reference | |
| 60-74 years | 1.14 | [0.76-1.70] | 0.5125 |
| > = 75 years | 1.75 | [0.83-3.54] | 0.1675 |
| Smoking | |||
| Non-Smoker | 1 | reference | |
| Former Smoker | 0.91 | [0.62-1.36] | 0.0577 |
| Smoker | 1.83 | [1.00-3.34] | 0.0242 |
| Counseling (yes) | |||
| No | 1 | reference | |
| Yes | 1.35 | [0.90-2.04] | 0.1442 |
| Exposure | |||
| Nil/light | 1 | reference | |
| Moderate | 1.24 | [0.61-2.51] | 0.0901 |
| Heavy | 2.34 | [1.14-7.79] | 0.0178 |
| Do not Know | 2.31 | [1.12-4.77] | 0.0275 |
| CT Scan Results | |||
| Normal | 1 | reference | |
| Isolated pulmonary nodules (only) | 1.68 | [0.86-3.31] | 0.1313 |
| Pleural plaques (only) | 1.46 | [0.79-2.69] | 0.2315 |
| Asbestosis (with or without pleural plaques) | 1.92 | [0.97-3.81] | 0.0608 |
| Other diseases (only) | 1.49 | [0.85-2.62] | 0.1633 |
| Two or more of the above diseases | 2.04 | [0.95-4.37] | 0.0673 |
| Unknown results | 0.99 | [0.53-1.83] | 0.9775 |
1: Values of PCQ greater than the 95th percentile of the PCQ score distribution in non-exposed subjects (see ref [16])