Family member characteristics stratified by the patient's ICU outcome
| Family member characteristics | All family members (N=7019) | Family members of ICU survivors (N=6149) | Family members of ICU non-survivors (N=870) |
| Age, years, mean (SD) | 54 (15.1) | 54 (15.0) | 52 (15.2) |
| Age group, years, n (%) | |||
| <30 | 507 (7.5) | 439 (7.4) | 68 (8.0) |
| 30–39 | 701 (10.3) | 595 (10.0) | 106 (12.5) |
| 40–49 | 1423 (21.0) | 1245 (21.0) | 178 (21.0) |
| 50–59 | 1614 (23.8) | 1406 (23.7) | 208 (24.6) |
| 60–69 | 1507 (22.2) | 1334 (22.5) | 173 (20.4) |
| 70–79 | 827 (12.2) | 747 (12.6) | 80 (9.5) |
| 80+ | 204 (3.0) | 171 (2.9) | 33 (3.9) |
| Sex, n (%) | |||
| Male | 2327 (33.5) | 2052 (33.7) | 275 (31.9) |
| Female | 4622 (66.5) | 4034 (66.3) | 588 (68.1) |
| Ethnicity, n (%) | |||
| White | 6555 (94.0) | 5738 (93.9) | 817 (94.6) |
| Asian | 138 (2.0) | 114 (1.9) | 24 (2.8) |
| Black | 54 (0.8) | 50 (0.8) | 4 (0.5) |
| Mixed ethnicity or other ethnic group | 88 (1.3) | 84 (1.4) | 4 (0.5) |
| Not stated | 139 (2.0) | 124 (2.0) | 15 (1.7) |
| Relationship to patient, n (%) (‘I am the patient’s…’) | |||
| Partner | 2096 (29.9) | 1891 (30.8) | 205 (23.6) |
| Child | 654 (9.3) | 1893 (30.8) | 346 (39.8) |
| Parent | 2239 (31.9) | 622 (10.1) | 32 (3.7) |
| Sibling | 704 (10.0) | 624 (10.1) | 80 (9.2) |
| Other relative | 969 (13.8) | 799 (13.0) | 170 (19.5) |
| Other non-relative | 356 (5.1) | 319 (5.2) | 37 (4.3) |
| Next-of-kin, n (%) | 3520 (50.2) | 3153 (51.4) | 367 (42.3) |
| Lives with patient, n (%) | 2559 (36.5) | 2311 (37.6) | 248 (28.5) |
| Highest level of education, n (%) | |||
| NVQ level 1 or 2 | 1683 (28.9) | 1465 (28.9) | 218 (29.1) |
| NVQ level 3 | 1123 (19.3) | 989 (19.5) | 134 (17.9) |
| NVQ level 4 or 5 | 1769 (30.4) | 1537 (30.3) | 232 (31.0) |
| Other | 1244 (21.4) | 1080 (21.3) | 164 (21.9) |
| Quintile of deprivation, n (%) | |||
| 1 (least deprived) | 1190 (17.1) | 1164 (19.9) | 159 (19.4) |
| 2 | 1405 (20.2) | 1281 (21.9) | 181 (22.1) |
| 3 | 1488 (21.4) | 1238 (21.1) | 181 (22.1) |
| 4 | 1488 (21.4) | 1189 (20.3) | 169 (20.7) |
| 5 (most deprived) | 1391 (20.0) | 989 (16.9) | 128 (15.6) |
| Distance (km) from home to hospital, median (IQR) | 12.4 (5.4–33.6) (6714) | 12 (6–34) | 12 (5–33) |
| Previous experience of ICU as a family member, n (%) | 1841 (26.6) | 1641 (27.1) | 200 (23.3) |
| Frequent visitor, n (%) | 5403 (78.9) | 4713 (78.6) | 690 (81.2) |
National Vocational Qualification (NVQ) level 1 or 2, equivalent to General Certificate of Secondary Education (GCSE) or O-level (school exams taken at age 16 years); NVQ level 3, equivalent to A-level, AS-level or High School Certificate (school exams taken at age 18 years) and NVQ level 4 or 5, equivalent to degree, higher degree, Higher National Certificate and Higher National Diploma.
ICU, intensive care unit.