Table 1.
Characteristics of the study's cohort
| N (% on the cohort) | No multimorbidity (% on the group) | 1 or more physical health conditions (% on the group) | 1 or 2 physical health conditions (% on the group) | 3 or more physical health conditions (% on the group) | |
|---|---|---|---|---|---|
| Total | 20 800 (100) | 7215 (34.7) | 13 585 (65.3) | 8459 (40.7) | 5126 (24.6) |
| Ethnicity | |||||
| White British | 7270 (35.0) | 2767 (38.1) | 4503 (61.9) | 2925 (40.2) | 1578 (21.7) |
| Black British/Other Black background | 3141 (15.1) | 851 (27.1) | 2290 (72.9) | 1240 (39.5) | 1050 (33.4) |
| Black African | 2853 (13.7) | 838 (29.4) | 2015 (70.6) | 1224 (42.9) | 791 (27.7) |
| Black Caribbean | 1825 (8.8) | 423 (23.2) | 1402 (76.8) | 764 (41.9) | 638 (35.0) |
| Other White background | 1789 (8.6) | 748 (41.1) | 1065 (58.9) | 766 (42.3) | 299 (16.6) |
| Asian British/Other Asian background | 848 (4.1) | 314 (37.0) | 534 (63.0) | 333 (39.3) | 201 (23.7) |
| Mixed ethnic background | 689 (3.3) | 244 (35.4) | 445 (64.6) | 274 (39.8) | 171 (24.8) |
| Irish | 333 (1.6) | 127 (38.1) | 206 (61.9) | 128 (38.4) | 78 (23.4) |
| Indian | 327 (1.6) | 103 (31.5) | 224 (68.5) | 142 (43.4) | 82 (25.1) |
| Pakistani | 207 (1.0) | 80 (38.7) | 127 (61.4) | 90 (43.5) | 37 (17.9) |
| Chinese | 134 (0.6) | 65 (48.5) | 69 (51.5) | 48 (35.8) | 21 (15.7) |
| Bangladeshi | 125 (0.6) | 50 (40.0) | 75 (60.0) | 51 (40.1) | 24 (19.2) |
| Other ethnic background | 1259 (6.1) | 605 (49.1) | 630 (50.9) | 474 (38.4) | 156 (12.6) |
| Gender | |||||
| Men | 12 593 (60.5) | 4352 (34.6) | 8241 (65.4) | 5023 (39.9) | 3218 (25.6) |
| Women | 8207 (39.5) | 2863 (34.9) | 5344 (65.1) | 3436 (41.9) | 1908 (23.3) |
| Age: Mdn (IQR) | 36.9 (27.0–47.1) | 35.6 (26.9–45.7) | 37.6 (27.0–47.8) | 37.8 (27.3–48.1) | 37.1 (27.3–48.1) |
| 13–17 years | 1018 (4.9) | 399 (39.2) | 619 (60.8) | 412 (40.47) | 207 (20.3) |
| 18–34 years | 8367 (40.2) | 3076 (36.8) | 5291 (63.2) | 3232 (38.6) | 2059 (24.6) |
| 35–49 years | 7404 (35.6) | 2256 (34.1) | 4878 (65.9) | 3018 (40.8) | 1860 (25.1) |
| 50–65 years | 4011 (19.3) | 1214 (30.27) | 27 978 (69.7) | 1797 (44.8) | 1000 (24.9) |
| Area-level deprivation a (7.4% missing data) | |||||
| Least deprived (IMD deciles 7–10) | 1497 (7.8) | 634 (42.4) | 863 (57.7) | 606 (40.5) | 257 (17.2) |
| Middle deprivation (IMD deciles 5–6) | 3141 (16.3) | 1093 (34.8) | 2048 (65.2) | 1288 (41.0) | 760 (24.2) |
| Second most deprived (IMD deciles 3–4) | 7300 (37.9) | 2470 (33.8) | 4830 (66.2) | 2939 (40.3) | 1891 (25.9) |
| Most deprived (IMD deciles 1–2) | 7328 (38.0) | 2391 (32.6) | 4937 (67.4) | 3019 (41.2) | 1918 (26.2) |
| Observation period (years): M (SD) | 8.11 (4.40) | 7.31 (4.35) | 8.55 (4.37) | 7.83 (4.43) | 9.74 (4.00) |
| Physical health conditions | % on multimorbidity group | ||||
| Asthma | 3119 (15.0) | 0 | 3119 (23) | 1126 (13.3) | 1993 (38.9) |
| Bronchitis | 552 (2.7) | 0 | 552 (4.1) | 115 (1.4) | 437 (8.5) |
| Diabetes | 6687 (32.2) | 0 | 6687 (49.2) | 2751 (32.5) | 3936 (76.8) |
| Hypertension/high blood pressure | 9481 (45.6) | 0 | 9481 (59.8) | 4712 (55.7) | 4769 (93.0) |
| Low blood pressure | 5112 (24.6) | 0 | 5112 (37.6) | 1616 (19.1) | 3496 (68.2) |
| Overweight or obesity | 5438 (26.1) | 0 | 5438 (40.0) | 1817 (21.5) | 3621 (70.6) |
| Rheumatoid arthritis | 172 (0.8) | 0 | 172 (1.3) | 57 (0.7) | 115 (2.2) |
Notes: aProportions for area-level deprivation were calculated from available data.