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. 2021 Nov 3;22:43. doi: 10.1186/s10195-021-00606-7

Table 1.

Sociodemographic characteristics and differences between groups

Total (n  =  638) Alive (n  =  582) Deceased (n  =  56) p valuea
Gender
 Female 495 (77.6%) 446 (90.1%) 49 (9.9%) 0.063
 Male 143 (22.4%) 136 (95.1%) 7 (4.9%)
Age (years)
 18–70 300 (46.7%) 291 (97%) 9 (3%) 0.0001
 > 70 338 (53.3%) 291 (86.1%) 47 (13.9%)
Laterality
 Right 331 (51.9%) 303 (91.8%) 28 (8.2%) 0.77
 Left 307 (48.1%) 279 (90.9%) 28 (9.1%)
Type of trauma
 Low-energy 614 (96.2%) 560 (91.2%) 54 (8.8%) 0.987
 High-energy 23 (3.6%) 21 (91.3%) 2 (8.7%)
Season
 Autumn–Winter 313 (49.1%) 281 (89.8%) 32 (10.2%) 0.205
 Spring–Summer 325 (50.9%) 301 (92.6%) 24 (7.4%)
Neer classification
 Non-displaced and 2-parts 361 (56.6%) 322 (89.2%) 39 (10.8%) 0.03
 3- or 4-part and fracture-dislocation 277 (43.4%) 260 (93.9%) 17 (6.1%)
AO-OTA classification
 Type A 314 (49.2%) 282 (89.8%) 32 (10.2%) 0.453
 Type B 275 (43.1%) 255 (92.7%) 20 (7.3%)
 Type C 49 (7.7%) 45 (91.8%) 4 (8.2%)
Treatment
 Conservative 513 (80.4%) 464 (90.4%) 49 (9.6%) 0.187
 Surgical 125 (19.6%) 118 (94.4%) 7 (5.6%)
  Locking plate 47 (37.6%) 46 (97.9%) 1 (2.1%)
  Endomedullary nail 16 (12.8%) 14 (87.5%) 2 (12.5%)
  Kirschner needle 9 (7.2%) 9 (100%) 0
  Reversed total arthroplasty 36 (28.8%) 33 (91.7%) 3 (8.3%)
  Others 17 (13.6%) 16 (94.1%) 1 (5.9%)
Comorbidities
 Cardiovascular 329 (51.6%) 286 (86.9%) 43 (13.1%) 0.0001
 Neurological-psychiatric 187 (29.4%) 156 (83.4%) 31 (16.6%) 0.0001
 Smoking-alcoholic abuse 46 (7.2%) 41 (89.1%) 5 (10.9%) 0.603
 Obesity 37 (5.8%) 33 (89.2%) 4 (10.8%) 0.652
 Diabetes 109 (17.1%) 95 (87.2%) 14 (12.8%) 0.101
 Osteoporosis 63 (9.9%) 60 (95.2%) 3 (4.8%) 0.235
 Rheumatologic 44 (6.9%) 42 (95.5%) 2 (4.5%) 0.317
 Endocrinologic 90 (14.1%) 79 (87.8%) 11 (12.2%) 0.213
Charlson comorbidity index
 CCI 0–5 524 (82.1%) 500 (95.4%) 24 (4.6%) 0.0001
 CCI > 5 114 (17.9%) 82 (71.9%) 32 (28.1%)
 Mean 3.71 ± 3.85 3.49 ± 3.9 6 ± 2.31 0.0001b

Bold values with statistically significant differences (p < 0.05)

ap value for Chi-square test for comparison of proportions between groups

bp value for t Student test for comparison of means between groups