Table 2.
Demographic and clinical characteristics between the participants who stayed in the studies and the participants who dropped from the studies.
| Variables (N=130) | Followed (N=88) | Dropped out (N=42) | P Value |
|---|---|---|---|
| Age (years), mean ± SD | 80 ± 7 | 81± 5 | 0.586 |
| Sex, male, n (%) | 19 (22%) | 12 (29%) | 0.382 |
| Marital status, n (%) | |||
| married | 64 (73%) | 31 (74%) | 0.450 |
| single | 20 (23%) | 7 (17%) | |
| divorced/widowed | 4 (4%) | 4 (9%) | |
| Living condition, n (%) | |||
| living together | 65 (74%) | 28 (67%) | 0.395 |
| living alone | 23 (26%) | 14 (33%) | |
| Children, n (%) | |||
| having children | 79 (90%) | 38 (90%) | 0.900 |
| no children | 9 (10%) | 4 (10%) | |
| BMI (kg/m2), mean ± SD | 23 ± 5 | 23 ± 3 | 0.902 |
| Education (years), mean ± SD | 5 ± 5 | 4 ± 5 | 0.272 |
| ACCI (points), mean ± SD | 5 ± 2 | 4 ± 5 | 0.939 |
| CMMSE (points), mean ± SD | 22 ± 5 | 22 ± 6 | 0.823 |
| CRP (mg/L), mean ± SD | 29 ± 24 | 20 ± 19 | 0.082 |
| HGB (g/dL), mean ± SD | 11 ± 2 | 11 ± 2 | 0.879 |
| WBC (K/μL), mean ± SD | 8 ± 3 | 8 ± 3 | 0.521 |
| ASA class, n (%) | |||
| I | 1 (1%) | 1 (2%) | |
| II | 55 (63%) | 29 (69%) | 0.613 |
| III | 32 (36%) | 12 (29%) | |
| Anesthesia type, n (%) | |||
| propofol | 3 (3%) | 3 (7%) | |
| sevoflurane | 22 (25%) | 9 (21%) | 0.620 |
| propofol & sevoflurane | 63 (72%) | 30 (72%) | |
| Surgery type, n (%) | |||
| proximal femoral nail | 47 (53%) | 20 (48%) | |
| hip replacement | 37 (42%) | 19 (45%) | 0.743 |
| open reduction and internal fixation | 4 (5%) | 3 (7%) | |
| Length of anesthesia (min), mean ± SD | 129 ± 46 | 134 ± 58 | 0.585 |
| Length of operation (min), mean ± SD | 93 ± 41 | 103 ± 51 | 0.231 |
| Estimated blood loss (mL), mean ± SD | 304 ± 241 | 351 ± 322 | 0.372 |
| Length of hospitalization (day), mean ± SD | 19 ± 6 | 19 ± 5 | 0.973 |
| Postoperative delirium, n (%) | 20 (23%) | 14 (33%) | 0.198 |
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.