Table 1 The demographic and clinical characteristics.
From: Threshold effect of prognostic nutritional index on mortality in geriatric hip fracture patients
PNI tertile | Low | Medium | High | P-value | P-value* |
|---|---|---|---|---|---|
N | 655 | 715 | 745 | ||
PNI | 38.21 ± 2.50 | 43.14 ± 1.07 | 48.08 ± 3.81 | < 0.001 | < 0.001 |
Lymphocyte count (*109/L) | 0.84 ± 0.34 | 1.01 ± 0.39 | 1.38 ± 0.83 | < 0.001 | < 0.001 |
Albumin (g/L) | 33.99 ± 2.86 | 38.07 ± 2.14 | 41.19 ± 2.93 | < 0.001 | < 0.001 |
Age (year) | 81.47 ± 6.52 | 79.79 ± 6.58 | 77.10 ± 6.41 | < 0.001 | < 0.001 |
Sex | < 0.001 | - | |||
Male | 242 (36.95%) | 236 (33.01%) | 194 (26.04%) | ||
Female | 413 (63.05%) | 479 (66.99%) | 551 (73.96%) | ||
Injury mechanism | 0.922 | - | |||
Falling | 632 (96.49%) | 695 (97.20%) | 721 (96.78%) | ||
Accident | 18 (2.75%) | 17 (2.38%) | 19 (2.55%) | ||
Other | 5 (0.76%) | 3 (0.42%) | 5 (0.67%) | ||
Fracture classification | < 0.001 | - | |||
Intertrochanteric fracture | 514 (78.47%) | 527 (73.71%) | 488 (65.50%) | ||
Femoral neck fracture | 141 (21.53%) | 188 (26.29%) | 257 (34.50%) | ||
Hypertension | 286 (43.66%) | 365 (51.05%) | 380 (51.01%) | 0.007 | - |
Diabetes | 102 (15.57%) | 136 (19.02%) | 173 (23.22%) | 0.001 | - |
CHD | 337 (51.45%) | 376 (52.59%) | 373 (50.07%) | 0.628 | - |
Arrhythmia | 234 (35.73%) | 218 (30.49%) | 216 (28.99%) | 0.019 | - |
Hemorrhagic stroke | 13 (1.98%) | 17 (2.38%) | 11 (1.48%) | 0.456 | - |
Ischemic stroke | 186 (28.40%) | 220 (30.77%) | 185 (24.83%) | 0.039 | - |
Cancer | 29 (4.43%) | 13 (1.82%) | 17 (2.28%) | 0.008 | - |
Associated injuries | 62 (9.47%) | 38 (5.31%) | 39 (5.23%) | 0.002 | - |
Dementia | 42 (6.41%) | 22 (3.08%) | 15 (2.01%) | < 0.001 | - |
Hepatitis | 28 (4.27%) | 12 (1.68%) | 25 (3.36%) | 0.018 | - |
Gastritis | 11 (1.68%) | 15 (2.10%) | 11 (1.48%) | 0.655 | - |
Treatment strategy | < 0.001 | - | |||
CRIF/ORIF | 507 (77.40%) | 525 (73.43%) | 487 (65.37%) | ||
HA | 145 (22.14%) | 183 (25.59%) | 234 (31.41%) | ||
THA | 3 (0.46%) | 7 (0.98%) | 24 (3.22%) | ||
Time to admission (h) | 112.78 ± 299.04 | 72.98 ± 239.89 | 50.68 ± 193.85 | < 0.001 | < 0.001 |
Time to operation (d) | 4.55 ± 3.00 | 4.11 ± 2.19 | 4.17 ± 2.34 | 0.002 | 0.034 |
Operation time (mins) | 93.83 ± 37.82 | 94.28 ± 36.75 | 92.15 ± 33.35 | 0.49 | 0.836 |
Blood loss (mL) | 250.03 ± 159.28 | 243.02 ± 147.40 | 233.28 ± 150.78 | 0.128 | 0.343 |
Follow-up (months) | 35.66 ± 19.35 | 38.68 ± 17.50 | 41.03 ± 16.75 | < 0.001 | < 0.001 |
Urea (mmol/L) | 7.12 ± 3.32 | 6.83 ± 2.69 | 6.17 ± 2.34 | < 0.001 | < 0.001 |
Post-operative hospital stay (d) | 4.46 ± 3.45 | 4.36 ± 2.48 | 4.19 ± 2.70 | 0.210 | 0.127 |
Mortality | 285 (43.51%) | 207 (28.95%) | 144 (19.33%) | < 0.001 | - |
