GRAPPA meeting participants’ ratings for OMERACT domain match questionnaires for each PsA instrument.
| Participant Ratings for OMERACT Content and Face Validity Items (% votes) | 66/68 SJC/TJC, n = 22 | SPARCC, n = 17 | HAQ-DI, n = 9 | PsAID9, n = 22 | PsAID12, n = 24 | FACIT-Fatigue, n = 22 |
|---|---|---|---|---|---|---|
| Domain match | ||||||
| Yes | 20 (91) | 10 (59) | 4 (44) | 12 (55) | 17 (71) | 16 (73) |
| Uncertain | 2 (9) | 4 (24) | 5 (56) | 7 (32) | 6 (25) | 4 (18) |
| No | 0 | 2 (12) | 0 | 2 (9) | 1 (4) | 0 |
| Missing | 0 | 1 (6) | 0 | 1 (5) | 0 | 2 (9) |
| Not redundant | ||||||
| Yes | 13 (59) | 9 (53) | 5 (56) | 9 (41) | 8 (33) | 6 (27) |
| Uncertain | 7 (32) | 4 (24) | 4 (44) | 3 (14) | 2 (8) | 7 (32) |
| No | 2 (9) | 3 (18) | 0 | 9 (41) | 12 (50) | 8 (36) |
| Missing | 0 | 1 (6) | 0 | 1 (5) | 2 (8) | 1 (5) |
| Adequacy of content | ||||||
| Yes | 16 (73) | 8 (47) | 0 | 10 (45) | 15 (63) | 12 (55) |
| Uncertain | 0 | 4 (24) | 5 (56) | 3 (14) | 5 (21) | 6 (27) |
| No | 6 (27) | 5 (29) | 2 (22) | 9 (41) | 3 (13) | 2 (9) |
| Missing | 0 | 0 | 2 (22) | 0 | 1 (4) | 2 (9) |
| Adequacy of phrasing | ||||||
| Yes | n/a | n/a | 9 (100) | 15 (68) | 14 (58) | 13 (59) |
| Uncertain | n/a | n/a | 0 | 2 (9) | 2 (8) | 2 (9) |
| No | n/a | n/a | 0 | 4 (18) | 7 (29) | 5 (23) |
| Missing | n/a | n/a | 0 | 0 | 1 (4) | 2 (9) |
| Elements described | ||||||
| Yes | 9 (41) | 9 (53) | n/a | n/a | n/a | n/a |
| Uncertain | 3 (14) | 4 (24) | n/a | n/a | n/a | n/a |
| No | 0 | 0 | n/a | n/a | n/a | n/a |
| Missing | 10 (45) | 2 (12) | n/a | n/a | n/a | n/a |
| Adequacy of response options | ||||||
| Yes | 14 (64) | 13 (76) | 5 (55) | 19 (86) | 20 (83) | 20 (91) |
| Uncertain | 7 (32) | 3 (18) | 2 (22) | 3 (14) | 2 (8) | 0 |
| No | 0 | 1 (6) | 2 (22) | 0 | 0 | 1 (5) |
| Missing | 1 (5) | 0 | 0 | 0 | 2 (8) | 1 (5) |
| Adequacy of scoring | ||||||
| Yes | 18 (82) | 13 (76) | 6 (67) | 10 (45) | 11 (46) | 9 (41) |
| Uncertain | 4 (18) | 3 (18) | 1 (11) | 11 (50) | 9 (38) | 10 (45) |
| No | 0 | 1 (6) | 2 (22) | 1 (5) | 1 (4) | 2 (9) |
| Missing | 0 | 0 | 0 | 0 | 3 (13) | 1 (5) |
Bold and italic indicate consensus (≥ 70%); bold only indicates majority agreement (≥ 50% but < 70%). GRAPPA: Group for Research and Assessment of Psoriasis and Psoriatic Arthritis; OMERACT: Outcome Measures in Rheumatology; PsA: psoriatic arthritis; SJC/TJC: swollen/tender joint count; SPARCC: Spondyloarthritis Consortium of Canada; HAQ-DI: Health Assessment Questionnaire–Disability Index; PsAID: Psoriatic Arthritis Impact of Disease; FACIT: Functional Assessment of Chronic Illness Therapy; n/a: not applicable.