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Table 1 Baseline characteristics of 325 adults allocated to anxiety or non-anxiety groups

From: Preoperative anxiety predicted the incidence of postoperative delirium in patients undergoing total hip arthroplasty: a prospective cohort study

Characteristic Anxiety group (n = 95) Non-anxiety group (n = 230) p value
Demographic data
Age in yrs., mean (SD) 52.1(13.8) 52.3(13.6) 0.905
Male, n(%) 60(63.2%) 124(53.9%) 0.126
BMI in kg/m2, mean (SD) 27.9(3.6) 27.2(3.1) 0.079
Education, completed high school or better, n(%) 38(40.0%) 77(33.5%) 0.263
Lifestyle
 Alcohol abuse, n(%) 10(10.5%) 20(8.7%) 0.604
 Ever smoked, n(%) 27(28.4%) 70(30.4%) 0.718
 Current smoked, n(%) 33(34.7%) 68(29.6%) 0.360
Clinical characteristics
 History of stroke, n(%) 16(16.8%) 43(18.7%) 0.693
 IHD, n(%) 37(38.9%) 84(36.5%) 0.681
 Hypertension, n(%) 42(44.2%) 95(41.3%) 0.629
 Diabetes, n(%) 34(35.8%) 74(32.2%) 0.529
Which side of total hip arthroplasty, n(%) 0.796
 left 46(48.4%) 115(50.0%)  
 right 49(51.6%) 115(50.0%)
ASA, n(%) 0.803
 I 8(8.4%) 15(6.5%)  
 II 19(20.0%) 44(19.3%)
 III 68(71.6%) 171(74.3%)
 MMSE before surgery, mean (SD) 27.5(1.9) 27.1(2.2) 0.122
 NSAIDs, n(%) 75(78.9%) 167(72.6%) 0.233
  1. The two groups were allocated according to the HADS-A (people of the HADS-A ≥ 7 in the anxiety group and people of the HADS< 7 in the non-anxiety group)
  2. Abbreviations: BMI Body Mass Index, IHD Ischemic Heart Disease, ASA American Society of Anesthesiologists, MMSE Mini-Mental State Examination, SD Standard Deviation, NSAIDs Non-steroidal Anti-inflammatory Drugs