Association Between BB Index Score and Risk of Emergency Hospital Admission in the Prospective Cohort Analysis (N = 8,248)
| BB Index Score | Patients, No. | Unadjusted | Adjusteda | ||
|---|---|---|---|---|---|
| Hazard Ratio (95% CI) | P Value | Hazard Ratio (95% CI) | P Value | ||
| Of the patient | |||||
| 0 | 95 | 1.589 (0.970–2.604) | .07 | 2.272 (1.371–3.764) | .001 |
| Q1 (>0 to <0.247) | 1,892 | 1.188 (0.953–1.482) | .13 | 1.123 (0.882–1.431) | .35 |
| Q2 (0.247 to <0.383) | 1,891 | 1.091 (0.875–1.358) | .44 | 1.050 (0.830–1.329) | .69 |
| Q3 (0.383 to <0.567) | 1,901 | 1.101 (0.885–1.369) | .39 | 1.053 (0.837–1.323) | .66 |
| Q4 (0.567 to <1) | 1,894 | 1.031 (0.829–1.281) | .78 | 0.963 (0.768–1.206) | .74 |
| 1 (ref) | 575 | 1.000 | – | 1.000 | – |
| Of the practice, average | |||||
| Q1 (<0.336) | 2,085 | 1.083 (0.915–1.282) | .35 | 0.968 (0.809–1.158) | .70 |
| Q2 (0.366 to <0.436) | 2,017 | 0.916 (0.771–1.089) | .32 | 0.853 (0.718–1.014) | .07 |
| Q3 (0.436 to <0.535) | 2,068 | 0.871 (0.735–1.031) | .11 | 0.878 (0.744–1.037) | .12 |
| Q4 (0.535) (ref) | 2,078 | 1.000 | – | 1.000 | – |
BB=Bice and Boxerman; Q=quartile ref=reference category.
Note: Estimated hazard ratios are from mixed-effects Weibull regression analysis.
↵a Adjusted for age, sex, number of general practitioner consultations, having had a previous emergency hospital admission in 2010–2012, deprivation level, general practitioner practice location (urban/rural), number of general practitioners in a practice, and the following morbidities: diabetes, chronic obstructive pulmonary disease, asthma, epilepsy, cancer, stroke, coronary heart disease, chronic renal disease, depression and schizophrenia. For the complete table, see Supplemental Table 2 (http://www.annfammed.org/content/15/6/515/suppl/DC1).