Table 1.
Baseline characteristics of study population.
| Variables (N=130) | Delirium (N=34) | Non-delirium (N=96) | P Value |
|---|---|---|---|
| Age (years), mean ± SD | 83 ± 5 | 79 ± 6 | 0.001 |
| Sex, male, n (%) | 9 (27%) | 22 (23%) | 0.676 |
| Marital status, n (%) | |||
| married | 21 (62%) | 74 (77%) | 0.058 |
| single | 11(32%) | 16 (17%) | |
| divorced/widowed | 2 (6%) | 6 (6%) | |
| Living condition, n (%) | |||
| living together | 20 (59%) | 73 (76%) | 0.056 |
| living alone | 14 (41%) | 23 (24%) | |
| Children, n (%) | |||
| having children | 29 (85%) | 89 (93%) | 0.289 |
| no children | 5 (15%) | 7 (7%) | |
| BMI (kg/m2), mean ± SD | 20 ± 6 | 22 ± 4 | 0.673 |
| Education (years), mean ± SD | 4 ± 5 | 5 ± 5 | 0.229 |
| ACCI (points), mean ± SD | 5 ± 1 | 5 ± 2 | 0.353 |
| CMMSE (points), mean ± SD | 18 ± 5 | 24 ± 5 | 0.001 |
| CRP (mg/L), mean ± SD | 29 ± 26 | 25 ± 21 | 0.245 |
| HGB (g/dL), mean ± SD | 10 ± 2 | 10 ± 2 | 0.123 |
| WBC (K/μL), mean ± SD | 8 ± 3 | 8 ± 3 | 0.598 |
| ASA class, n (%) | |||
| I | 1 (3%) | 1 (1%) | |
| II | 20 (59%) | 64 (67%) | 0.580 |
| III | 13 (38%) | 31 (32%) | |
| Anesthesia type, n (%) | |||
| propofol | 1 (3%) | 5 (5%) | |
| sevoflurane | 10 (29%) | 21 (22%) | 0.620 |
| propofol & sevoflurane | 23 (68%) | 70 (73%) | |
| Surgery type, n (%) | |||
| proximal femoral nail | 22 (65%) | 45 (47%) | |
| hip replacement | 10 (29%) | 46 (48%) | 0.160 |
| open reduction and internal fixation | 2 (6%) | 5 (5%) | |
| Length of anesthesia (min), mean ± SD | 128 ± 49 | 132 ± 50 | 0.729 |
| Length of operation (min), mean ± SD | 88 ± 46 | 100 ± 44 | 0.174 |
| Estimated blood loss (mL), mean ± SD | 329 ± 286 | 316 ± 264 | 0.814 |
| Length of hospitalization (day), mean ± SD | 20 ± 6 | 18 ± 5 | 0.127 |
BMI, Body Mass Index; SD, standard deviation; ACCI, age-adjusted Charlson comorbidity index; CMMSE, Chinese Mini-Mental State Examination; CRP, C-reactive protein; HGB, Hemoglobin; WBC, white blood cell; ASA, American Society of Anesthesiologists.