Table 2.
Baseline Participant Characteristics*
| Characteristic | Total Sample (n = 537) |
Usual Care (n = 129) |
Patient Intervention (n = 128) |
Provider Intervention (n = 140) |
Patient-Provider Intervention (n = 140) |
|---|---|---|---|---|---|
| Mean age (SD), y | 63.3 (9.6) | 63.9 (10.2) | 63.9 (9.3) | 62.6 (9.6) | 62.7 (9.3) |
| Men, n (%) | 140 (26.1) | 37 (28.7) | 35 (27.3) | 34 (24.3) | 34 (24.3) |
| Nonwhite race, n (%) | 217 (40.4) | 49 (38.0) | 51 (39.8) | 58 (41.4) | 59 (42.1) |
| Married or living with partner, n (%) | 316 (58.9) | 77 (59.7) | 80 (62.5) | 85 (60.7) | 74 (52.9) |
| High school education or less, n (%) | 127 (23.7) | 40 (31.0) | 37 (28.9) | 25 (17.9) | 25 (17.9) |
| Inadequate income, n (%) | 95 (17.7) | 29 (22.5) | 22 (17.2) | 22 (15.7) | 22 (15.7) |
| Employed or student, n (%)† | 281 (53.0) | 69 (53.9) | 67 (54.0) | 69 (49.3) | 76 (55.1) |
| Disabled, n (%) | 43 (8.1) | 15 (11.7) | 12 (9.7) | 9 (6.4) | 7 (5.1) |
| Fair or poor health, n (%) | 107 (19.9) | 27 (20.9) | 29 (22.7) | 26 (18.6) | 25 (17.9) |
| Mean BMI (SD), kg/m2 | 35.6 (7.4) | 35.5 (8.1) | 34.9 (6.9) | 36.4 (7.8) | 35.3 (6.6) |
| Joints with osteoarthritis, n (%) | |||||
| Knee only | 455 (84.7) | 110 (85.3) | 106 (82.8) | 120 (85.7) | 119 (85.0) |
| Hip only | 48 (8.9) | 12 (9.3) | 15 (11.7) | 8 (5.7) | 13 (9.3) |
| Knee and hip | 34 (6.3) | 7 (5.4) | 7 (5.5) | 12 (8.6) | 8 (5.7) |
| Mean duration of arthritis symptoms (SD), y‡ | 10.4 (9.2) | 9.9 (9.7) | 9.3 (7.7) | 10.4 (8.6) | 11.8 (10.5) |
| Mean WOMAC score (SD)§ | 38.6 (17.0) | 35.6 (18.0) | 41.0 (15.9) | 37.7 (17.9) | 40.1 (15.8) |
| Mean SPPB score (SD)|| | 8.5 (1.9) | 8.6 (2.1) | 8.3 (1.8) | 8.7 (1.8) | 8.6 (1.9) |
| Mean PHQ-8 score (SD)¶ | 4.6 (4.3) | 4.0 (3.7) | 4.8 (4.3) | 4.6 (4.2) | 5.0 (4.9) |
BMI = body mass index; PHQ-8 = 8-item Patient Health Questionnaire; SPPB = Short Physical Performance Battery; WOMAC = Western Ontario and McMaster Universities Osteoarthritis Index.
*
Percentages may not sum to 100 due to rounding.
†
Data are missing for 7 participants.
‡
Data are missing for 1 participant.
§
Data are missing for 1 participant.
||
Data are missing for 15 participants.
¶
Data are missing for 2 participants.