Table 3.
Multivariable analysis of possible risk factors for loss to follow-up of tuberculosis cases in England, Wales and Northern Ireland 2001–2007 (N=37537*)
| Characteristic | aOR† (95% CI) | P value‡ |
|---|---|---|
| Gender | ||
| Female | 1 | <0·001 |
| Male | 1·29 (1·23–1·35) | |
| Age group (years) | ||
| 0–14 | 0·42 (0·32–0·56) | |
| 15–44 | 1 | <0·001 |
| 45–64 | 0·86 (0·75–0·99) | |
| ⩾65 | 0·70 (0·58–0·85) | |
| Region of reporting | ||
| London | 1 | <0·001 |
| Outside London | 1·39 (1·27–1·53) | |
| Year of notification | ||
| 2001 | 1·03 (0·85–1·24) | |
| 2002 | 1·26 (1·06–1·49) | |
| 2003 | 1·23 (1·04–1·46) | |
| 2004 | 1·32 (1·12–1·55) | |
| 2005 | 1·28 (1·10–1·50) | |
| 2006 | 1·17 (0·99–1·37) | |
| 2007 | 1 | 0·004 |
| Site of disease | ||
| Extra-pulmonary | 1 | 0·004 |
| Pulmonary sputum smear-positive | 1·25 (1·12–1·41) | |
| Pulmonary other | 1·16 (1·04–1·28) | |
| Previous diagnosis | ||
| No | 1 | 0·001 |
| Yes | 1·18 (0·99–1·41) | |
| Not known | 1·26 (1·13–1·41) | |
| Ethnic group, length of residence in the UK and the interaction between these | See Figure 2 | |
aOR, Adjusted odds ratio; CI, confidence interval.
*
Excluding cases with data missing for sex, age, ethnic group, place of birth or site of disease.
†
Adjusted for all variables in the table and the interaction between ethnic group and length of residence in the UK.
‡
Likelihood ratio test for adding the variable to the model.