Table 1 Descriptive statistics for each grip strength trajectory latent class (n = 2263)
Variable (reporting age (y)) | Missing (n,%) | Total sample | High grip strength | Intermediate grip strength | Low grip strength |
|---|---|---|---|---|---|
|  | Males (n = 1101) | ||||
Sociodemographic | Â | Â | Â | Â | Â |
Occupational class (53y) (n,%) | 5 (0.5%) | Â | Â | Â | Â |
 Professional |  | 155 (14.1) | 17 (23.0) | 112 (14.3) | 26 (10.8) |
 Intermediate |  | 458 (41.8) | 34 (46.0) | 325 (41.6) | 99 (41.1) |
 Skilled (non-manual) |  | 114 (10.4) | 5 (6.8) | 82 (10.5) | 27 (11.2) |
 Skilled (manual) |  | 269 (24.5) | 15 (20.3) | 191 (24.5) | 63 (26.1) |
 Partly skilled |  | 79 (7.2) | 3 (4.1) | 57 (7.3) | 19 (7.9) |
 Unskilled |  | 21 (1.9) | 0 | 14 (1.8) | 7 (2.9) |
Educational attainment (26y) (n,%) | 61 (5.5) | Â | Â | Â | Â |
 No education |  | 342 (32.9) | 17 (25.0) | 251 (34.0) | 74 (31.8) |
 Less than GCE |  | 57 (5.5) | 2 (2.9) | 36 (4.9) | 19 (8.2) |
 GCE (O or A) |  | 463 (44.5) | 36 (52.9) | 326 (44.1) | 101 (43.4) |
 Degree (incl Higher) |  | 178 (17.1) | 13 (19.1) | 126 (17.1) | 39 (16.7) |
Smoking status (53y, current smoker) | 47 (4.3) | 208 (19.7) | 12 (16.7) | 140 (18.6) | 56 (24.4) |
Leisure physical activity last wk (53y,≥5times)(n,%) | 47 (4.3) | 386 (36.6) | 34 (47.2) | 279 (37.1) | 73 (31.7) |
Anthropometrics | Â | Â | Â | Â | Â |
BMI (kg/m2) (53y) (median (25th, 75th centile)) | 47 (4.3) | 26.8 (24.6, 29.4) | 28.1 (25.9, 29.9) | 26.8 (24.5, 29.3) | 26.6 (24.8, 29.3) |
Height (53y) (mean, (SD)) | 63 (5.7) | 175.5 (6.6) | 178.5 (7.4) | 176.0 (6.2) | 172.9 (6.6) |
Waist:hip ratio (53y) (mean, (SD)) | 47 (4.3) | 0.9 (0.1) | 0.9 (0.1) | 0.9 (0.0) | 0.9 (0.1) |
Morbidity | Â | Â | Â | Â | Â |
Pre-/diabetes (53y, yes) (n,%) | 149 (13.5) | 327 (34.4) | 22 (33.3) | 227 (33.8) | 78 (36.5) |
Cancer (53y, yes) (n,%) | 48 (4.4) | 15 (1.4) | 2 (2.8) | 10 (1.3) | 3 (1.3) |
Severe respiratory symptoms (53y, yes) (n,%) | 47 (4.3) | 182 (17.3) | 11 (15.3) | 115 (15.3) | 56 (2.4) |
|  | Females (n = 1162) | ||||
Sociodemographic | Â | Â | Â | Â | Â |
Occupational class (53y) (n,%) | 4 (0.3) | Â | Â | Â | Â |
 Professional |  | 23 (2.0) | 4 (2.1) | 19 (2.3) | 0 |
 Intermediate |  | 431 (37.2) | 92 (47.9) | 302 (36.4) | 37 (27.2) |
 Skilled (non-manual) |  | 421 (36.4) | 55 (28.7) | 317 (38.2) | 49 (36.0) |
 Skilled (manual) |  | 83 (7.2) | 13 (6.8) | 55 (6.6) | 15 (11.0) |
 Partly skilled |  | 150 (13.0) | 21 (10.9) | 106 (12.8) | 23 (16.9) |
 Unskilled |  | 50 (4.3) | 7 (3.7) | 31 (3.7) | 12 (8.8) |
Educational attainment (26y) (n,%) | 64 (5.5) | Â | Â | Â | Â |
 No education |  | 336 (30.6) | 39 (21.3) | 244 (31.0) | 53 (41.1) |
 Less than GCE |  | 101 (9.2) | 17 (9.3) | 75 (9.5) | 9 (7.0) |
 GCE (O or A) |  | 595 (54.2) | 110 (60.1) | 421 (53.6) | 64 (49.6) |
 Degree (incl Higher) |  | 66 (6.0) | 17 (9.3) | 46 (5.9) | 3 (2.3) |
Smoking status (53y, current smoker) | 21 (1.8) | 216 (18.9) | 29 (15.3) | 152 (18.6) | 35 (25.7) |
Leisure physical activity last wk (53y,≥5times)(n,%) | 21 (1.8) | 416 (36.5) | 80 (42.3) | 309 (37.9) | 27 (19.9) |
Anthropometrics | Â | Â | Â | Â | Â |
BMI (kg/m2) (53y) (median (25th, 75th centile)) | 28 (2.2) | 26.1 (23.7, 29.7) | 25.6 (23.5, 28.2) | 26.0 (23.7, 29.8) | 26.8 (23.8, 32.8) |
Height (53y) (mean, (SD)) | 49 (4.2) | 162.8 (6.0) | 165.8 (6.6) | 162.4 (5.6) | 160.5 (6.1) |
Waist:hip ratio (53y) (mean, (SD)) | 26 (2.2) | 0.8 (0.1) | 0.8 (0.1) | 0.8 (0.1) | 0.8 (0.1) |
Morbidity | Â | Â | Â | Â | Â |
Pre-/diabetes (53y, yes) (n,%) | 175 (15.1) | 316 (32.0) | 52 (30.6) | 222 (31.5) | 42 (37.2) |
Cancer (53y, yes) (n,%) | 22 (1.9) | 45 (4.0) | 11 (5.8) | 29 (3.6) | 5 (3.7) |
Severe respiratory symptoms (53y, yes) (n,%) | 22 (1.9) | 189 (16.6) | 32 (16.9) | 126 (15.5) | 31 (22.8) |