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Table 1 Mean and Standard Deviation (SD) of Mental Component Scores at Baseline, 1 year after Total Hip Arthroplasty, and 1-Year Change Overall and By Baseline Characteristics

From: Improvement in mental health following total hip arthroplasty: the role of pain and function

Baseline characteristics N (%) Baseline 1 year after THA 1-Year Change P-Value for Differences in 1-Year Change by Groups
Overall 610 44.7 (11.2) 47.5 (10.5) 2.8 (10.8)  
Age: <55 81 (13%) 45.6 (10.8) 49.0 (9.6) 3.4 (10.6) 0.940
 55–64 123 (20%) 43.9 (11.9) 46.6 (11.1) 2.7 (10.7)
 65–74 191 (31%) 46.2 (11.6) 48.7 (10.7) 2.5 (10.9)
 ≥75 215 (35%) 43.6 (10.5) 46.4 (10.2) 2.8 (10.9)
Sex: Women 323 (53%) 43.1 (11.2) 46.2 (10.9) 3.1 (11.0) 0.425
 Men 287 (47%) 46.6 (11.0) 48.9 (9.9) 2.4 (10.6)
BMI: <25 224 (37%) 46.4 (11.0) 49.2 (9.9) 2.8 (10.7) 0.288
 25–29.9 248 (41%) 44.5 (11.5) 46.5 (10.4) 2.0 (10.8)
 30–34.9 104 (17%) 42.6 (10.4) 46.4 (10.9) 3.8 (11.1)
 ≥35 34 (6%) 42 (11.6) 47.1 (12.9) 5.1 (10.9)
Education: Missing 154 (25%) 44.3 (11.6) 46.1 (11.3) 1.8 (11.0) 0.045
[Tukey’s pairwise test:
< 9 vs. ≥13 Yrs = 0.078]
 <9 Yrs 160 (26%) 41.3 (11.3) 45.5 (10.7) 4.2 (11.5)
 9–12 Yrs 140 (23%) 44.4 (10.8) 48.1 (10.2) 3.7 (10.6)
 ≥13 Yrs 156 (26%) 49 (9.8) 50.3 (9.2) 1.3 (9.7)
Insurance: Private 94 (15%) 49.7 (9.8) 50.5 (9.5) 0.8 (10.7) 0.058
 Public 516 (85%) 43.8 (11.2) 46.9 (10.6) 3.1 (10.8)
Smoking: Never 383 (64%) 45.4 (11.1) 47.5 (10.5) 2.1 (10.9) 0.080
 Ever 219 (36%) 43.6 (11.4) 47.2 (10.5) 3.7 (10.5)
ASA score: 1 74 (12%) 49.8 (10.1) 49 (9.7) −0.9 (9.6) 0.005
[Tukey’s pairwise test:
1 vs. 2 = 0.008
1 vs. 3–4 = 0.006
2 vs. 3–4 = 0.603]
 2 448 (73%) 44.3 (11.3) 47.4 (10.6) 3.1 (10.8)
 3–4 88 (14%) 42.6 (10.4) 46.8 (10.8) 4.3 (11.1)
Diabetes: Yes 58 (10%) 42.7 (11.8) 46.8 (9.7) 4.1 (10.2) 0.312
 No 552 (90%) 44.9 (11.1) 47.6 (10.6) 2.6 (10.8)
Antidepressant: Yes 60 (10%) 39 (9.4) 41.8 (11.0) 2.8 (12.4) 1.0
 No 550 (90%) 45.4 (11.2) 48.1 (10.3) 2.8 (10.6)
Opioid: Yes 82 (13%) 41.4 (11.6) 44.7 (11.1) 3.3 (10.6) 0.639
 No 528 (87%) 45.3 (11.1) 47.9 (10.3) 2.7 (10.8)
Charnley: A 257 (42%) 45.8 (11.2) 48.7 (9.4) 2.9 (11.1) 0.138
 B 150 (25%) 45.6 (11.5) 47 (10.9) 1.4 (10.4)
 C 203 (33%) 42.7 (10.9) 46.4 (11.3) 3.7 (10.6)
Primary OA: Yes 543 (89%) 44.7 (11.3) 47.4 (10.5) 2.7 (10.8) 0.721
 No 67 (11%) 45.4 (10.5) 48.6 (10.5) 3.2 (11)