Table 2.
Reliability of the Medical Outcomes Survey involving 133 tuberculosis participants in Kampala, Uganda, 2007-2008
| Subscale | Number of items | Cronbach's α |
Correlation with VAS scorea |
|---|---|---|---|
| Perceived health | 5 | 0.81 | 0.48 |
| Bodily pain | 2 | 0.88 | 0.46 |
| QoL | 1 | -2 | 0.47 |
| Role functioning | 2 | 0.65 | 0.42 |
| Social functioning1 | 1 | -2 | 0.49 |
| Vitality | 4 | 0.89 | 0.48 |
| Mental health | 5 | 0.90 | 0.47 |
| Health distress | 4 | 0.96 | 0.40 |
| Cognitive function | 4 | 0.88 | 0.35 |
| Physical functioning | 6 | 0.89 | 0.46 |
| Health transition | 1 | -2 | 0.38 |
aAll Medical Outcomes Survey subscales had a correlation p-value <0.001. 1One individual missed social function response. 2Internal consistency reliability cannot be calculated for a single-item scale.