Table 2

Respondent demographic and personality/practice characteristics

Estimation sample (n=333)Sample frame (n=1257)
Characteristics
 Male, no. (%)314 (94.3)1199 (95.4)
 Age, year (IQR)52 (44–59)50 (42–60)
Practice status, no. (%)
 Accredited registrar16 (4.8)120 (9.6)
 Consultant304 (91.3)1124 (89.4)
 Other12 (3.6)13 (1.0)
Australian states and territories, no. (%)
 Victoria93 (27.9)275 (21.9)
 New South Wales92 (27.6)408 (32.5)
 South Australia23 (6.9)113 (9.0)
 Queensland58 (17.4)271 (21.6)
 Northern Territory3 (0.9)6 (0.5)
 Western Australia29 (8.7)136 (10.9)
 Tasmania12 (3.6)24 (1.9)
 Australian Capital Territory6 (1.8)23 (1.8)
Residency status, no. (%)
 Australian citizen308 (92.5)-
 Permanent resident19 (5.7)-
 Temporary resident3 (0.9)-
MeanSDMinMax
Personality traits:
 BFI – extraversion3.20.8215
 BFI – agreeableness4.090.7125
 BFI – conscientiousness4.450.5425
 BFI – neuroticism2.620.8714.67
 BFI – openness3.630.731.335
 LOC8.281.841.8611
 LOTR23.8441130
Surgeon experience:
 Years of experience19.7610.49155
Surgeon volume:
 TKA per week3.654.56060
 Proportion of high volume surgeons0.430.501
Public vs private TKA surgery:
 Proportion of public to private0.40.3401
  • Personality traits were standardised for the regression analysis, hence mean=0 and SD=1. Zero observations were excluded in the regression analysis for the high-volume and proportion of public to private procedures performed interaction effects. The median number of TKA surgeries per week was used to determine high and low volume surgeons.

  • BFI, Big Five Personality Index; LOC, Mastery Locus of Control; LOTR, Life Orientation Test-Revised; TKA, total knee arthroplasty.