TABLE 1.
Study Patient Variables for Phone Intervention Group, Mail Intervention Group, and Their Respective Matched Controls
| Phone Intervention | Matched Control for Phone Intervention (no contact) | Mail Intervention | Matched Control for Mail Intervention (no contact) | |
|---|---|---|---|---|
| Patients, n | 609 | 1827 | 771 | 1542 |
| Age, years, median (mean ± SD) | 64 (58.9 ± 21.5) | 63 (58.7 ± 21.1) | 71 (66.7 ± 19.8) | 71 (66.4 ± 19.4) |
| Male, % | 45 | 45 | 45 | 45 |
| COPS2, median (mean ± SD) | 10 (27.2 ± 32.6) | 10 (27.5 ± 31.2) | 17 (32.6 ± 34.7) | 17 (33.0 ± 34.9) |
| CCI score, median (IQR) | 1 (0–2) | 1 (0–2) | 1 (0–3) | 1 (0–3) |
| LAPS2, median (mean ± SD) | 16 (19.2 ± 13.1) | 19 (19.6 ± 12.6) | 19 (20.0 ± 13.1) | 19 (20.4 ± 12.5) |
| Utilization Per Person for 6-Month Interval Before Index ED Visit, Median (mean ± SD) | ||||
| Days with calls to AACC | 2 (3.3 ± 5.2) | 2 (3.3 ± 5.0) | 2 (3.4 ± 4.6) | 2 (3.7 ± 5.3) |
| ED visits | 0 (0.8 ± 2.3) | 0 (0.7 ± 1.8) | 0 (0.8 ± 1.7) | 0 (0.8 ± 1.9) |
| Outpatient encounters | 4 (7.3 ± 9.0) | 4 (7.3 ± 10.4) | 5 (7.7 ± 9.5) | 5 (7.9 ± 10.3) |
| For 6-Month Interval After Index ED Visit | ||||
| Mortality, % | 3 | 4 | 5 | 5 |
AACC indicates Appointment and Advice Call Center; CCI, Charlson Comorbidity Index; COPS2, COmorbidity Point Score, version 2; ED, emergency department; IQR, interquartile range; LAPS2, Laboratory-based Acute Physiology Score, version 2.