Do pessimists report worse outcomes after total hip arthroplasty?

Table 4 Multivariable-adjusted association^a of Pessimism with outcomes 2-years after Revision THA

	n/N^b (%)	OR (95 % CI)	p-value
Moderate-Severe Pain vs. None-Mild Pain
Pessimist
No	28/123 = 22.8 %
Yes	17/66 = 25.8 %	1.18 (0.50, 2.81) ^c	0.71
Improvement in Hip Function to “Better/Same/Worse” vs. “Much Better”
Pessimist
No	38/110 = 34.5 %	1.0
Yes	22/59 = 37.3 %	1.08 (0.52, 2.27) ^d	0.83
Moderate-Severe Activity Limitation vs. None-Mild Activity Limitation
Pessimist
No	67/123 = 54.5 %	1.0
Yes	42/63 = 66.7 %	1.73 (0.76, 3.94) ^e	0.19

^a Multivariable logistic regression models adjusted for covariates consistent with 1 variable per 10 events rule. Variables were added in the following order due to clinical relevance: gender and age; depression; medical comorbidity; income; preoperative pain and function
^b Totals may not add up exactly to 196 at 2-years due to missing responses to each of the variable
^c Model adjusted for age, sex, depression score (45 events)
^d Model adjusted for age, sex, depression score and Charlson index; adding income prevents the model from converging (60 events)
^e Model adjusted for age, sex, depression score, Charlson index, and income (85 events; no other variables had univariate p-values less than 0.2)

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