Table 1.
Characteristics of admissions to hospital for hypoglycaemia
| Characteristic | Derivation | Validation | ||||
|---|---|---|---|---|---|---|
| Inpatient death | One month readmission | 24 h discharge | Inpatient death | One month readmission | 24 h discharge | |
| Calendar year | 2013 | 2010–2012 | 2010–2012 | 2014 | 2013–2014 | 2013–2014 |
| Admission, n | 11,136 | 33,825 | 33,803 | 10,976 | 22,112 | 22,107 |
| Participant, n | 9937 | 28,554 | 28,533 | 9819 | 19,057 | 19,054 |
| Death, n | 296 | – | – | 296 | – | – |
| Readmission, n | – | 1789 | – | – | 1207 | – |
| 24 h discharge, n | – | – | 8396 | – | – | 5363 |
| Age at admission, years | ||||||
| <20 | 638 (5.7) | 2121 (6.3) | 2121 (6.3) | 594 (5.4) | 1232 (5.6) | 1232 (5.6) |
| 20–29 | 334 (3.0) | 1182 (3.5) | 1182 (3.5) | 344 (3.1) | 678 (3.1) | 678 (3.1) |
| 30–39 | 395 (3.6) | 1207 (3.6) | 1206 (3.6) | 341 (3.1) | 736 (3.3) | 736 (3.3) |
| 40–49 | 678 (6.1) | 2008 (5.9) | 2007 (5.9) | 686 (6.3) | 1364 (6.2) | 1362 (6.2) |
| 50–59 | 964 (8.7) | 2730 (8.1) | 2730 (8.1) | 960 (8.8) | 1924 (8.7) | 1924 (8.7) |
| 60–69 | 1542 (13.9) | 4348 (12.9) | 4347 (12.9) | 1468 (13.4) | 3010 (13.6) | 3010 (13.6) |
| 70–79 | 2818 (25.3) | 9120 (27.0) | 9118 (27.0) | 2840 (25.9) | 5658 (25.6) | 5656 (25.6) |
| ≥80 | 3767 (33.8) | 11,109 (32.8) | 11,092 (32.8) | 3743 (34.1) | 7510 (34.0) | 7509 (34.0) |
| Sex | ||||||
| Women | 5430 (48.8) | 16,518 (48.8) | 16,506 (48.8) | 5257 (47.9) | 10,687 (48.3) | 10,686 (48.3) |
| Men | 5706 (51.2) | 17,307 (51.2) | 17,297 (51.2) | 5719 (52.1) | 11,425 (51.7) | 11,421 (51.7) |
| Charlson index | 2.29 ± 1.62 | 2.04 ± 1.46 | 2.04 ± 1.46 | 2.37 ± 1.61 | 2.33 ± 1.62 | 2.33 ± 1.62 |
| IMD-10a | ||||||
| Least deprived 10% | 607 (5.5) | 1828 (5.4) | 1826 (5.4) | 633 (5.8) | 1240 (5.6) | 1240 (5.6) |
| Less deprived 10–20% | 768 (6.9) | 2241 (6.6) | 2240 (6.6) | 671 (6.1) | 1439 (6.5) | 1439 (6.5) |
| Less deprived 20–30% | 857 (7.7) | 2459 (7.3) | 2458 (7.3) | 806 (7.3) | 1663 (7.5) | 1663 (7.5) |
| Less deprived 30–40% | 917 (8.2) | 2863 (8.5) | 2861 (8.5) | 842 (7.7) | 1759 (8.0) | 1759 (8.0) |
| Less deprived 40–50% | 1027 (9.2) | 3108 (9.2) | 3103 (9.2) | 949 (8.7) | 1976 (8.9) | 1976 (8.9) |
| More deprived 10–20% | 1436 (12.9) | 4747 (14.0) | 4743 (14.0) | 1563 (14.2) | 2999 (13.6) | 2999 (13.6) |
| More deprived 20–30% | 1359 (12.2) | 4223 (12.5) | 4222 (12.5) | 1369 (12.5) | 2728 (12.3) | 2727 (12.3) |
| More deprived 30–40% | 1195 (10.7) | 3538 (10.5) | 3537 (10.5) | 1192 (10.9) | 2387 (10.8) | 2387 (10.8) |
| More deprived 40–50% | 1101 (9.9) | 3314 (9.8) | 3312 (9.8) | 1174 (10.7) | 2275 (10.3) | 2273 (10.3) |
| Most deprived 10% | 1869 (16.8) | 5504 (16.3) | 5501 (16.3) | 1777 (16.2) | 3646 (16.5) | 3644 (16.5) |
| Ethnicity | ||||||
| White | 9225 (82.8) | 28,185 (83.3) | 28,166 (83.3) | 9030 (82.3) | 18,255 (82.6) | 18,250 (82.6) |
| Other | 1911 (17.2) | 5640 (16.7) | 5637 (16.7) | 1946 (17.7) | 3857 (17.4) | 3857 (17.4) |
Data reported as number (percentage) or mean ± SD
aIMD score in deciles
Complete-case data (i.e. non-missing) are shown—there was one missing information for inpatient death (age), 41 for readmission (one age and 40 IMD-10) and 68 for length of hospital stay (one age, 34 IMD-10, 27 time to discharge and six both IMD-10 and time to discharge)