TABLE 3.
Number of items free from differential item functioning (discrimination or difficulty) within each validated subscale by language, geography and education
| Developer's Subscale Name | Number of Items without Differential Item Functioning | ||
|---|---|---|---|
| Language (Province) English/French | Education Low/High | Geography Urban/Rural | |
| Accessibility | |||
| PCAS Organizational Access | 4/6 (67%) | 6/6 (100%) | 5/6 (83%) |
| PCAT First-Contact Utilization | 2/3 (67%) | 3/3 (100%) | 3/3 (100%) |
| PCAT First-Contact Accessibility | 1/4 (25%) | 3/4 (75%) | 2/4 (50%) |
| EUROPEP Organization of Care | 3/7 (43%) | 7/7 (100%) | 5/7 (71%) |
| Subtotal | 10/20 (50%) | 19/20 (95%) | 15/20 (75%) |
| Comprehensiveness of Services | |||
| PCAT Comprehensiveness (services available) | 2/4 (50%) | 4/4 (100%) | 4/4 (100%) |
| CPCI Comprehensive Care | 3/6 (50%) | 4/6 (67%) | 6/6 (100%) |
| Subtotal | 5/10 (50%) | 8/10 (80%) | 10/10 (100%) |
| Relational Continuity | |||
| PCAS Visit-Based Continuity | 0/2 (0%) | 0/2 (0%) | 2/2 (100%) |
| PCAS Contextual Knowledge | 3/5 (60%) | 5/5 (100%) | 4/5 (80%) |
| PCAT Ongoing Care | 1/4 (25%) | 4/4 (100%) | 3/4 (75%) |
| CPCI Accumulated Knowledge | 1/8 (13%) | 4/8 (50%) | 7/8 (88%) |
| CPCI Patient Preference for Regular Physician | 2/5 (40%) | 4/5 (80%) | 4/5 (80%) |
| Subtotal | 7/24 (29%) | 17/24 (71%) | 20/24 (83%) |
| Management Continuity | |||
| PCAS Integration | 3/6 (50%) | 5/6 (83%) | 6/6 (100%) |
| PCAT Coordination | 2/4 (50%) | 4/4 (100%) | 3/4 (75%) |
| CPCI Coordination of Care | 3/8 (38%) | 5/8 (63%) | 6/8 (75%) |
| VANOCSS Coordination of Care (overall), number of problems | 6/6 (100%) | 6/6 (100%) | 6/6 (100%) |
| VANOCSS Specialty Provider Access, number of problems | 4/4 (100%) | 4/4 (100%) | 4/4 (100%) |
| Subtotal | 18/28 (64%) | 24/28 (86%) | 25/28 (89%) |
| Interpersonal Communication | |||
| PCAS Communication | 5/6 (83%) | 5/6 (83%) | 6/6 (100%) |
| PCAS Trust | 1/8 (13%) | 1/8 (13%) | 8/8 (100%) |
| CPCI Interpersonal Communication | 1/6 (17%) | 2/6 (33%) | 6/6 (100%) |
| EUROPEP Clinical Behaviour | 10/16 (63%) | 15/16 (94%) | 16/16 (100%) |
| IPC-II Communication (elicited concerns, responded) | 3/3 (100%) | 0/3 (0%) | 2/3 (67%) |
| IPC-II Communication (explained results, medications) | 4/4 (100%) | 2/4 (50%) | 4/4 (100%) |
| IPC-II Decision-Making (patient-centred decision-making) | 4/4 (100%) | 3/4 (75%) | 4/4 (100%) |
| Subtotal | 28/47 (60%) | 28/47 (60%) | 46/47 (98%) |
| Respectfulness | |||
| PCAS Interpersonal Treatment | 4/5 (80%) | 0/5 (0%) | 5/5 (100%) |
| IPC-II Hurried Communication | 4/5 (80%) | 5/5 (100%) | 5/5 (100%) |
| IPC-II Interpersonal Style (compassionate, respectful) | 1/5 (20%) | 5/5 (100%) | 5/5 (100%) |
| IPC-II Interpersonal Style (respectful office staff) | 2/4 (50%) | 2/4 (50%) | 3/4 (75%) |
| Subtotal | 11/19 (58%) | 12/19 (63%) | 18/19 (95%) |
| Whole-Person Care – Community Orientation | |||
| PCAT Community Orientation | 1/3 (33%) | 3/3 (100%) | 3/3 (100%) |
| CPCI Community Context | 0/2 (0%) | 0/2 (0%) | 2/2 (100%) |
| Subtotal | 1/5 (20%) | 3/5 (60%) | 5/5 (100%) |
| Number of subscales with no differential item functioning | 5/29 (17%) | 12/29 (41%) | 18/29 (62%) |
| Number of subscales where ≥50% of items exhibit differential functioning | 12/29 (41%) | 6/29 (21%) | 0/29 (0%) |