Skip to main content

Table 2 Primary and secondary outcomes: complete case analysis

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

Primary Outcome All enrolled patients (n = 325) Anxiety group (n = 95) Non-anxiety group (n = 230) p value
Incidence of delirium, n(%) 58/325(17.8%) 24/95(25.3%) 34/230(14.8%) 0.025
Secondary Outcome Delirium cases (n = 58) Anxiety
(n = 24)
Non-anxiety (n = 34)  
Duration of delirium> 2 days, n(%) 19(32.8%) 9(37.5%) 10(29.4%) 0.518
Severity of delirium13, n(%) 28(48.3%) 10(41.7%) 18(52.9%) 0.397
Patterns of delirium 0.334
 hyperactive, n(%) 16 5 11  
 hypoactive, n(%) 32 16 16  
 Mix, n(%) 10 3 7  
 Age in yrs.,
mean (SD)
60.5(10.6) 60.8(11.5) 60.2(10.1) 0.834
 Male, n(%) 33(56.9%) 14(58.3%) 19(55.9%) 0.853
 BMI i n kg/m2, mean (SD) 28.0(3.7) 28.5(3.7) 27.6(3.8) 0.373
 Education, completed high school or better, n(%) 9(15.5%) 5(20.8%) 4(7.0%) 0.568
 MMSE before surgery, mean (SD) 27.5(2.0) 27.9(1.7) 27.1(2.1) 0.129
 VAS, mean (SD) 2.4(1.5) 2.1(1.2) 2.6(1.6) 0.201
 Surgery time in min, mean (SD) 81.2(31.4) 88.3(31.8) 76.3(30.6) 0.153
 LOS in days, mean (SD) 7.0(2.4) 7.8(3.0) 6.4(1.6) 0.025
  1. Abbriviations: BMI Body Mass Index, MMSE Mini-Mental State Examination, VAS Visual Analogue Scale, LOS Length of Stay, SD Standard Deviation