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Table 1 Baseline characteristics in the study cohorts with hip fracture undergoing surgery and without hip fracture as control group

From: The incidence of mental disorder increases after hip fracture in older people: a nationwide cohort study

  hip fracture Standardized mean difference
No (n = 1408) Yes (n = 1408)
n % n %
Sex
 Female 860 61.1 884 62.8 0.035
 Male 548 38.9 524 37.2 0.035
Age, years
 60–69 133 9.45 147 10.4 0.033
 70–79 557 39.5 527 37.4 0.044
 80+ 689 48.9 699 49.6 0.014
 Mean (SD) 79.4 8.09 79.2 8.36 0.018
Comorbidity
 HTN 1008 71.6 1079 76.6 0.115
 DM 498 35.4 601 42.7 0.15
 Hyperlipidemia 470 33.4 442 31.4 0.043
 CAD 703 49.9 732 51.9 0.041
 CVA 526 37.4 622 44.2 0.139
 Chronic liver disease 351 24.9 272 19.3 0.135
Mean of follow-up period of mental disorders (SD) 5.49 3.45 5.16 3.35 0.096
  1. Standardized mean difference ≤ 0.1 indicates a negligible difference between the two cohorts
  2. Abbreviations: HTN Hypertension, DM Diabetes mellitus, CAD Coronary artery disease, CVA Cerebrovascular accident