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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