Table 2 Agreement between self-reported and routinely collected data for any attendance at health care, at 1, 3 and 6 months following release from prison
Concordance n (%) | Discordance n (%) | Kappa | PPV % | NPV % | |||
Self-report | No | Yes | Yes | No | |||
Records | No | Yes | No | Yes | |||
One month post release | |||||||
General Practitioner (n = 738) | 343 (46) | 280 (38) | 69 (9) | 46 (6) | 0.69 | 80.2 | 88.2 |
Emergency Department (n = 808) | 751 (93) | 16 (2) | 9 (1) | 32 (4) | 0.41 | 64.0 | 95.9 |
Hospital admission (n = 794) | 753 (95) | 19 (2) | 16 (2) | 6 (1) | 0.62 | 76.0 | 99.2 |
Three months post release | |||||||
General Practitioner (n = 690) | 270 (39) | 276 (40) | 72 (10) | 72 (10) | 0.58 | 79.3 | 78.9 |
Emergency Department (n = 744) | 636 (85) | 33 (4) | 18 (2) | 57 (8) | 0.42 | 64.7 | 91.8 |
Hospital admission (n = 730) | 655 (90) | 37 (5) | 13 (2) | 25 (3) | 0.63 | 74.0 | 96.3 |
Six months post release | |||||||
General Practitioner (n = 646) | 195 (30) | 299 (46) | 58 (9) | 94 (15) | 0.52 | 76.1 | 67.5 |
Emergency Department (n = 686) | 540 (79) | 34 (5) | 14 (2) | 98 (14) | 0.31 | 70.8 | 84.6 |
Hospital admission (n = 670) | 577 (86) | 28 (4) | 28 (4) | 37 (6) | 0.41 | 50.0 | 94.0 |