Table 1. Patient demographics and health care use in the AMA group and its paired non-AMA group.
| Characteristics | AMA (n = 328) | Non-AMA (n = 328) | p-value |
| Sex | NA | ||
| Male | 207 (63.1) | 212 (64.6) | |
| Female | 121 (36.9) | 116 (35.4) | |
| Mean Age (SD) | 42.5 (12.2) | 44.4 (12.1) | NA |
| Age group | |||
| 17–29 | 44 (13.4) | 34 (10.4) | |
| 30–39 | 88 (26.8) | 66 (20.1) | |
| 40–49 | 120 (36.6) | 135 (41.2) | |
| 50–59 | 51 (15.6) | 63 (19.2) | |
| > = 60 | 25 (7.6) | 30 (9.2) | |
| Housing | <0.0001 | ||
| Homeless | 106 (32.3) | 35 (11.0) | |
| SRO | 115 (35.1) | 73 (22.3) | |
| Apartment/house | 107 (32.6) | 220 (67.1) | |
| Emergency Department (ED) Visit>10 in past 12 months | 28 (8.5%) | 17 (5.2%) | 0.13 |
| Number of ED visit within 12 months after index admission (median, IQR)* | 3 (1, 6) | 1 (0, 3) | <0.0001 |
| 0 | 49 (15.1%) | 122 (37.5%) | |
| 1–2 | 96 (29.5%) | 95 (29.2%) | |
| 3–5 | 74 (22.8%) | 62 (19.1%) | |
| 6–9 | 59 (18.2%) | 22 (6.8%) | |
| >10 | 47 (14.5%) | 24 (7.4%) | |
| LOS of index admission (median, IQR) | 4 (2, 9) | 7( 4, 13) | <0.0001 |
| 0–3 days | 138 (42.1) | 68 (20.7) | |
| 4–7 days | 90 (27.4) | 103 (31.4) | |
| 8–14 days | 56 (17.1) | 83 (25.3) | |
| ≥15 days | 44 (13.4) | 74 (22.6) |
NA = not applicable as patients were matched on these variables; N (%) unless otherwise indicated; SD = standard deviation; SRO = single room occupancy; LOS = length of stay; IQR = interquartile range.
*Number of missing = 6 (3 pairs) and ED visits are exclusive of those resulting in hospital admission.