Table 7 Mean change in Roland Morris for ethnic classification and episodic history (n = 472)
From: Low back pain: what determines functional outcome at six months? An observational study
| Â | N (%) | Adjusted mean change in Roland Morris Disability Score | 95% confidence interval | p-value |
|---|---|---|---|---|
Ethnicity* | Â | Â | Â | 0.003 |
   Black African/Caribbean/other | 43 (9) | 3.6 | 1.9 to 5.2 |  |
   Indian/Pakistani/Bangladeshi | 34 (7) | 4.3 | 2.5 to 6.1 |  |
   White | 285 (60) | 4.4 | 3.8 to 5.0 |  |
   Chinese | 8 (2) | 1.4 | -2.3 to 5.2 |  |
   North African | 14 (3) | 2.0 | -0.8 to 4.8 |  |
   Middle Eastern | 52 (11) | 0.9 | -0.6 to 2.4 |  |
   Other | 19 (4) | 3.2 | 0.8 to 5.6 |  |
Missing | 17 (4) | Â | Â | Â |
Episodes in past 12 months # | Â | Â | Â | < 0.001 |
   1 | 43 (9) | 7.1 | 5.4 to 8.7 |  |
   2-6 | 87 (18) | 5.1 | 4.0 to 6.3 |  |
   7-12 | 24 (5) | 4.5 | 2.3 to 6.6 |  |
   Continuous | 301 (64) | 2.8 | 2.2 to 3.4 |  |
   Missing | 17 (4) |  |  |  |