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Table 2 The stratified analyses of ASA, CCI, age, and survival patient number of two groups

From: Long-term survival of femoral neck fracture patients aged over ninety years: Arthroplasty compared with nonoperative treatment

VariableTreatment regime groupsχ2P
Nonoperative group n(%)Arthroplasty group n(%)
ASA
 1or227 (60.0)18 (40.0)0.0560.813
 3or426 (63.4)15 (36.6)
CCI
 0or118 (50.0)18 (50.0)4.5080.105
 211 (61.1)7 (38.9)
  ≥ 324 (75.0)8 (25.0)
Age-stratified
 90—94 years41 (62.1)25 (37.9)0.0290.864
  ≥ 95 years12 (60.0)8 (40.0)
Long-term survival probability
 Survival > 5 years6 (31.6)13 (68.4)9.312010.002*
 Survival< 5 years47 (70.1)20 (29.9)
  1. * P < 0.05 was considered statistically significant