Table 2.
Characteristics of patients having at least one COPD admission in level 2 implementation and comparator sites at preindex date
| Characteristics | Implementation sites | Comparator sites | P value |
| Number of COPD admissions | 4657 | 4515 | |
| Number of patients having at least one COPD admission | 2732 | 2549 | |
| Age, mean (SD) | 71.92 (12.08) | 73.02 (11.45) | 0.166 |
| Sex, number of male (%) | 1351 (49.5) | 1240 (48.7) | 0.785 |
| Ethnicity, number of patients (%) | |||
| White | 2305 (85.59) | 2195 (87.7) | 0.748 |
| Other | 388 (14.4) | 307 (12.3) | |
| Comorbidity, mean Charlson score (SD) | 2.07 (1.58) | 2.14 (1.65) | 0.673 |
| Socioeconomic status, number of patients per IMD quintile (%) | |||
| 1 (most deprived) | 103 (37.0) | 930 (38.2) | 0.763 |
| 2 | 552 (20.4) | 554 (22.8) | |
| 3 | 493 (18.2) | 506 (20.8) | |
| 4 | 339 (12.5) | 244 (10.0) | |
| 5 (least deprived) | 326 (12.0) | 198 (8.1) |
COPD, chronic obstructive pulmonary disease; IMD, Index of Multiple Deprivation.