Table 1

Trust-level outcomes (monthly) pooled across implementation and comparator sites

OutcomeGroupPreindexPostindexDifference in the change postindex date between implementation and comparator sites* (95% CI)P value
Number of COPD admissions, mean (SD)Comparator48.02 (21.91)49.33 (19.33)0.17 (−6.57 to 6.90)0.960
Implementation52.49 (18.21)53.93 (17.94)
28-day COPD readmission rate, mean (SD)Comparator11.49 (3.60)12.79 (4.36)−1.31 (−5.37 to 2.75)0.513
Implementation15.95 (9.20)16.07 (11.53)
28-day overall readmission rate, mean (SD)Comparator23.63 (6.70)24.91 (7.46)−1.17 (−4.51 to 2.17)0.478
Implementation23.05 (9.90)23.10 (9.96)
90-day COPD readmission rate, mean (SD)Comparator22.35 (5.59)23.12 (7.27)−4.00 (−8.87 to 0.87)0.103
Implementation25.47 (16.42)22.38 (11.92)
Number of ED attendances for COPD per month, mean (SD)Comparator32.45 (25.17)37.60 (26.69)−3.38 (−14.59 to 7.82)0.525
Implementation45.87 (39.27)47.03 (38.22)
Length of stay, mean (SD)Comparator6.21 (1.96)5.95 (1.60)−0.30 (−1.10 to 0.51)0.453
Implementation6.76 (1.36)6.16 (1.17)
Total bed days, mean (SD)Comparator288.48 (156.30)275.86 (115.58)7.83 (−53.66 to 69.32)0.795
Implementation333.15 (121.35)326.37 (136.62)
  • *Adjusted for the number of COPD admissions, in-hospital mortality and overall 28-day readmission for COPD in the preindex date period.

  • COPD, chronic obstructive pulmonary disease; ED, emergency department.