Table 2 Patient characteristics: Comparison of HMO insured patients vs. other HMO insured patients (All sample and the admission subset)
From: The impact of EHR and HIE on reducing avoidable admissions: controlling main differential diagnoses
| Characteristics | The main HMO | Other HMOs | Total study sample |
|---|---|---|---|
| Data on all referrals (Admissions and Discharges) – All Sample | |||
| Number of Referrals | n = 210,568 | n = 71,182 | n = 281,750 |
| Age (years) | 48.6 (Quartiles: 27.6, 51.6, 69.9) | 39.2 (Quartiles: 20.5, 36.5, 55.7) | 46.3 (Quartiles: 25.4, 47.8, 67.3) |
| Male (%) | 99,951 (47.5%) | 35,683 (50.1%) | 135,634 (48.1%) |
| Referrals when EHR IS Viewed (%) | 68,851 (32.7%) | 18,991 (26.7%) | 87,842 (31.2%) |
| Referrals when EHR IS Viewed [Divided by Interoperability] | Local: 58,468 (27.8%) | Local: 17,197 (24.2%) | [Local: 75,665 (26.9%) |
| External: 10,383 (4.9%) | External: 1,794 (2.5%)] | External: 12,177 (4.3%)] | |
| Admissions (%) | 89,473 (42.5%) | 26,246 (36.9%) | 115,719 (41.1%) |
| Additional Data Only on the Admissions' subset | |||
| Number of Admissions | n = 89,473 | n = 26,246 | n = 115,719 |
| Admissions When EHR IS Was Viewed (% from All admissions) | 34,313 (38.4%) | 8,717 (33.2%) | 43,030 (37.2%) |
| Admissions When EHR IS Was Not Viewed (% from All Admissions) | 55,160 (61.6%) | 17,529 (66.8%) | 72,689 (62.8%) |
| Readmission within seven Days (% from Admissions) | 2,830 (3.2%) | 911 (3.5%) | 3,741 (3.2%) |
| Readmission within 30 Days (% from Admissions) | 6,802 (7.6%) | 1,823 (6.95%) | 8,625 (7.45%) |
| Single-Day Admissions (% from Admissions) | 18,449 (20.6%) | 6,859 (26.1%) | 25,308 (21.9%) |
| Admission Period (days) | 4.4 (Quartiles: 2, 3, 5) | 3.8 (Quartiles: 2, 3, 4) | 4.3 (Quartiles: 2, 3, 5) |