Prematching and postmatching population characteristics
| Unmatched, N (%) | Matched, N (%) | |||||
|---|---|---|---|---|---|---|
| MHM users (n=11 737) | Non-users (n=212 155) | p Value | MHM users (n=9345) | Non-users (n=9345) | p Value | |
| Age categories, years | <0.001 | <0.01 | ||||
| 18–19 | 283 (2.4) | 7494 (3.5) | 238 (2.5) | 244 (2.6) | ||
| 20–44 | 4750 (40.5) | 80 419 (37.9) | 3734 (40.0) | 3662 (39.2) | ||
| 45–64 | 4713 (40.2) | 81 156 (38.3) | 3741 (40.0) | 3710 (39.7) | ||
| ≥65 | 1991 (17.0) | 43 086 (20.3) | 1632 (17.5) | 1729 (18.5) | ||
| Sex | <0.001 | 0.63 | ||||
| Female | 6758 (57.6) | 108 360 (51.0) | 3896 (41.7) | 3861 (41.3) | ||
| Male | 4979 (42.4) | 103 795 (48.9) | 5449 (58.3) | 5484 (58.7) | ||
| Benefit type | <0.001 | <0.01 | ||||
| DHMO plan | 3751 (32.0) | 71 577 (33.7) | 3072 (32.9) | 2845 (30.4) | ||
| HMO plan | 5134 (43.8) | 80 928 (38.1) | 3974 (42.5) | 4086 (43.7) | ||
| Medicare | 1862 (15.9) | 37 790 (17.8) | 1532 (16.4) | 1618 (17.3) | ||
| Medicaid | 60 (0.5) | 3397 (1.6) | 48 (0.5) | 54 (0.6) | ||
| Other | 930 (7.9) | 18 463 (8.7) | 719 (7.7) | 742 (7.9) | ||
| DxCG score, mean | 1.75 | 1.85 | 0.002 | 1.79 | 1.82 | 0.39 |
| Number of chronic illnesses | <0.001 | 0.39 | ||||
| 0 | 10 288 (88.0) | 188 254 (88.7) | 7877 (86.8) | 8285 (86.2) | ||
| 1 | 1322 (11.3) | 21 367 (10.1) | 1096 (12.1) | 1207 (12.6) | ||
| 2 | 112 (10.0) | 2228 (1.1) | 90 (1.0) | 109 (1.1) | ||
| 3 | 15 (0.1) | 271 (0.1) | 13 (0.1) | 11 (0.1) | ||
| 4 | 0 (0.0) | 35 (0.0) | 0 (0.0) | 2 (0.0) | ||
| Distance to nearest medical office building, miles | <0.001 | 0.17 | ||||
| 0–4.9 | 8144 (69.4) | 143 368 (67.6) | 6154 (67.8) | 6639 (69.1) | ||
| 5–19.9 | 2954 (25.2) | 54 127 (25.5) | 2406 (26.5) | 2461 (25.6) | ||
| ≥20 | 639 (5.4) | 14 660 (6.9) | 516 (5.7) | 514 (5.3) | ||
| Annual utilisation, per member | ||||||
| Inpatient stays | 0.07 | 0.05 | <0.001 | 0.07 | 0.07 | 0.94 |
| ED visits | 0.13 | 0.11 | <0.001 | 0.13 | 0.13 | 0.23 |
| After-hours office visits | 0.08 | 0.05 | <0.001 | 0.08 | 0.07 | 0.09 |
| Low-acuity office visits | 0.24 | 0.16 | <0.001 | 0.24 | 0.24 | 0.88 |
| Low-acuity patient calls | 0.08 | 0.05 | <0.001 | 0.07 | 0.08 | 0.17 |
| Office visits | 3.27 | 2.18 | <0.001 | 3.30 | 3.28 | 0.69 |
| Patient calls | 3.83 | 3.03 | <0.001 | 3.83 | 4.07 | <0.01 |
| Scheduled telephone visits | 0.29 | 0.22 | <0.001 | 0.28 | 0.31 | 0.03 |
DHMO, deductible health maintenance organisation; ED, emergency department; HMO, health maintenance organisation; MHM, MyHealthManager.