Baseline characteristics of participants by surgical outcome for total joint replacement
| n (%), unless otherwise specified | |||||
|---|---|---|---|---|---|
| Total sample (n = 257) | TJR (n = 107) | No TJR (n = 110) | Loss to follow-up (n = 40) | P-value for TJR vs no TJR | |
| Type of osteoarthritis | 0.001 | ||||
| Hip | 134(52.1) | 67 (62.6) | 44 (40.0) | 23 (57.5) | |
| Knee | 123(47.9) | 40 (37.4) | 66 (60.0) | 17(42.5) | |
| Location of osteoarthritis | |||||
| Single hip | 64 (24.9) | 33 (30.8) | 23 (20.9) | 8 (20.0) | |
| Single knee | 57 (22.2) | 15(14.0) | 30 (27.3) | 12(30.0) | |
| Single hip and knee | 12(4.7) | 3 (2.8) | 5 (4.5) | 4(10.0) | |
| Both hips | 36(14.0) | 22 (20.6) | 9 (8.2) | 5(12.5) | |
| Both knees | 45(17.5) | 20(18.7) | 22 (20.0) | 1 (2.5) | |
| Both hips and knees | 20 (7.8) | 8(7.5) | 9 (8.2) | 3(7.5) | |
| Single hip and both knees | 14(5.4) | 4 (3.7) | 8(7.3) | 2(5.0) | |
| Single knee and both hips | 9 (3.5) | 2(1.9) | 4(3.6) | 3(7.5) | |
| Age | |||||
| All patients, mean (SD) years | 65.1 (SD10.2) | 64.6 (SD 10.3) | 65.2 (SD 10.0) | 66.1 (SD10.7) | 0.665 |
| Hip patients, mean (SD) years | 64.7 (SD 10.5) | 63.9 (SD 10.8) | 64.1 (SD10.5) | 67.8 (SD 9.7) | 0.901 |
| Knee patients, mean (SD) years | 65.7 (SD 9.9) | 65.9 (SD 9.6) | 66.0 (SD 9.6) | 63.8 (SD 11.8) | 0.975 |
| <55 years | 44(17.1) | 19(17.3) | 19(17.3) | 6(15.0) | 0.36 |
| 55-74 years | 166(64.6) | 73 (68.2) | 68(61.8) | 25 (62.5) | |
| ≥75 years | 47(18.3) | 15(14.0) | 23 (20.9) | 9 (22.5) | |
| Sex, female | |||||
| All patients | 141 (54.9) | 63 (58.9) | 58(52.7) | 20 (50.0) | 0.413 |
| Hip patients | 79 (59.0) | 43 (64.2) | 24 (54.7) | 12(52.2) | 0.255 |
| Knee patients | 62 (50.4) | 20 (50.0) | 34(51.5) | 8(47.1) | 0.721 |
| Marital status | 0.007 | ||||
| Married/living together | 192(74.7) | 76(71.0) | 90(81.8) | 26 (65.0) | |
| Divorced | 15(5.8) | 10(9.3) | 1 (0.9) | 4(10.0) | |
| Widowed | 40(15.6) | 20(18.7) | 14(12.7) | 6(15.0) | |
| Single | 10(3.9) | 1 (0.9) | 5 (4.5) | 4(10.0) | |
| Occupational status | 0.561 | ||||
| Retired | 142(55.9) | 58 (54.7) | 60(55.0) | 24(61.5) | |
| Currently working | 81 (31.9) | 37 (34.9) | 33 (30.3) | 11 (28.2) | |
| Currently not working | 13(5.1) | 6(5.6) | 5 (4.5) | 2(5.1) | |
| Medically disabled | 17(6.7) | 5 (4.7) | 10(9.2) | 2(5.1) | |
| In education | 1 (0.4) | 0 | 1 (0.9) | 0 | |
| Not specified | 3 | 1 | 1 | 1 | |
| Ethnicity | 0.312 | ||||
| White | 254 (99.6) | 106(99.1) | 109(100.0) | 39.0(100.0) | |
| Other | 1 (0.4) | 1 (0.9) | 0 | 0 | |
| Not specified | 2 | 0 | 1 | 1 | |
| Comorbiditya | |||||
| Hypertension | 82(31.9) | 31 (29.0) | 35(31.8) | 16(40.0) | 0.649 |
| Diabetes | 27(10.5) | 8(7.5) | 10(9.1) | 9(22.5) | 0.666 |
| Asthma | 30(11.7) | 12(11.2) | 14(12.7) | 4(10.0) | 0.732 |
| Depression | 23 (8.9) | 6(5.6) | 13(11.8) | 4(10.0) | 0.105 |
| Ankylosing spondylitis | 15(5.8) | 4 (3.7) | 8(7.3) | 3(7.5) | 0.255 |
| Angina | 16(6.2) | 5 (4.7) | 11 (10.0) | 0 | 0.133 |
| Bronchitis | 7 (2.7) | 1 (0.9) | 6(5.5) | 0 | 0.119 |
| Other | 66 (25.7) | 27 (25.2) | 30 (27.3) | 9(22.5) | 0.844 |
| One or more comorbidities | |||||
| All patients | 168(65.4) | 63 (58.9) | 78(70.9) | 27 (67.5) | 0.063 |
| Hip patients | 77 (57.5) | 34 (50.7) | 27(61.4) | 16(69.6) | 0.163 |
| Knee patients | 91 (74.0) | 29 (72.5) | 51 (77.3) | 11 (64.7) | 0.447 |
↵a Participantmay have reported one ormore comorbidity. SD = standard deviation. TJR = total joint replacement.