Table 4. Univariate analysis of the association between age, number of affected nerves, bacteriological index and disability grade upon release from multidrug treatment (MDT) in 255 new cases of leprosy reported at Eduardo de Menezes Hospital, 2005-2010.
| Grade 0 | Grade 1 | Grade 2 | p-value | |
|---|---|---|---|---|
| Age | ||||
| Mean | 41.5 | 50.9 | 50.3 | <0.001* |
| Standard deviation | 15.9 | 15.7 | 15.8 | |
| Minimum | 3.0 | 12.0 | 18.0 | |
| Maximum | 77.0 | 83.0 | 79.0 | |
| 25th percentile | 31.3 | 40.0 | 39.8 | |
| Median | 41.5 | 54.0 | 49.5 | |
| 75th percentile | 52.8 | 61.0 | 65.0 | |
| Number of affected nerves | ||||
| Mean | 0.6 | 3.8 | 8.9 | <0.001* |
| Standard deviation | 1.3 | 3.1 | 4.6 | |
| Minimum | 0.0 | 0.0 | 1.0 | |
| Maximum | 9.0 | 12.0 | 18.0 | |
| 25th percentile | 0.0 | 1.0 | 5.0 | |
| Median | 0.0 | 3.5 | 9.5 | |
| 75th percentile | 0.0 | 6.0 | 12.0 | |
| Bacteriological index | ||||
| Mean | 0.9 | 1.4 | 1.5 | <0.001* |
| Standard deviation | 1.7 | 1.7 | 1.7 | |
| Minimum | 0.0 | 0.0 | 0.0 | |
| Maximum | 6.0 | 5.0 | 5.0 | |
| 25th percentile | 0.0 | 0.0 | 0.0 | |
| Median | 0.0 | 0.0 | 0.5 | |
| 75th percentile | 0.8 | 3.0 | 3.0 |
Note: * Kruskal-Wallis test