Adherence to discharge processes before and after intervention implementation and 12 months after the intervention period
| Preintervention adherence* (%) | Postintervention adherence* (%) | OR† (95% CI) | p Value | Adherence sustainability period (%)* | p Value‡ | |
| Primary outcome | ||||||
| Composite score§ | Site 1 n=292 Site 2 n=127 | Site 1 n=274 Site 2 n=164 | Site 1 n=294 Site 2 n=138 | |||
| Combined | 73 | 89 | NA | <0.001 | 85 | 0.08 |
| Site 1 | 79 | 86 | NA | 0.3 | 83 | 0.3 |
| Site 2 | 60 | 93 | NA | <0.001 | 91 | 0.5 |
| Secondary outcomes | ||||||
| Antihypertensive medication | Site 1 n=116 Site 2 n=46 | Site 1 n=102 Site 2 n=57 | Site 1 n=117 Site 2 n=46 | |||
| Combined (adjusted) | 61 | 79 | 2.3 (1.4 to 3.8) | 0.001 | 77 | 0.7 |
| Site 1 | 63 | 73 | 1.6 (0.9 to 2.8) | 0.1 | 74 | 0.9 |
| Site 2 | 57 | 89 | 6.5 (2.3 to 18.3) | <0.001 | 85 | 0.5 |
| Antiplatelet therapy | Site 1 n=105 Site 2 n=40 | Site 1 n=90 Site 2 n=50 | Site 1 n=105 Site 2 n=46 | |||
| Combined (adjusted) | 88 | 96 | 3.0 (1.1 to 7.8) | 0.03 | 89 | 0.02 |
| Site 1 | 89 | 93 | 1.8 (0.6 to 5.0) | 0.3 | 85 | 0.08 |
| Site 2 | 88 | 100 | NA¶ | 0.01 | 98 | 0.3 |
| Discharge care plan | Site 1 n=71 Site 2 n=41 | Site 1 n=82 Site 2 n=57 | Site 1 n=72 Site 2 n=46 | |||
| Combined (adjusted) | 72 | 94 | 9.7 (3.9 to 24.1) | <0.001 | 92 | 0.5 |
| Site 1 | 93 | 96 | 2.0 (0.5 to 8.7) | 0.4 | 93 | 0.4 |
| Site 2 | 37 | 91 | 18.0 (5.9 to 55.0) | <0.001 | 91 | 1.0 |
| Gap score using benchmark for composite outcome | Site 1 n=292 Site 2 n=127 | Site 1 n=274 Site 2 n=164 | Site 1 n=294 Site 2 n=138 | |||
| Combined** | 85 | 94 | NA | <0.001 | 94 | 1.0 |
| Site 1 | 92 | 91 | NA | 0.7 | 91 | 1.0 |
| Site 2 | 69 | 98 | NA | <0.001 | 100 | 0.1 |
n refers to the combined number eligible for the two sites.
Preintervention period: January–March 2014, postintervention period: October–December 2014 and sustainability period: October–December 2015.
*Scores calculated as the number of patients who received the intervention divided by the number of patients eligible for the intervention.
†ORs adjusted for clustering using multilevel analysis (levels patient and hospital).
‡Compared with postintervention scores.
§Calculated as the total number that received the care processes divided by the total number eligible across all three care processes.
¶Unable to report OR where there was zero non-compliance in postintervention period.
**The gap score is the adjusted adherence divided by the benchmark. Benchmarks were calculated separately for each time period to account for any secular changes that may have occurred independent of the intervention. A higher score indicates that the site score is closer to the benchmark. Scores of 100% indicate that the site is equivalent to the benchmark. ORs using patient-level data for the gap scores could not be calculated.