Table 6 Characteristics of selected core sets of quality indicators
| Â | Validity | Discriminative capacity | Feasibility | Patient-professional agreement | |||||
|---|---|---|---|---|---|---|---|---|---|
Item-total | Factor loadingsa | Performance | Floor effects | Ceiling effects | Documentation | Missing values | Positive | Negative | |
GP-reported quality indicators | |||||||||
 Eliciting patient preferences (n = 323) | 0.576 | 0.673 | 46.1% | 11.8% | 5.9% | 69.1% | 6.6% | 49.4% | 61.0% |
 Quality of life assessment (n = 321) | 0.512 | 0.643 | 80.1% | 2.9% | 28.6% | 60.3% | 7.2% | -g | -g |
 Mutual agreement on treatment goals (n = 313) | 0.501 | 0.612 | 48.6% | 11.4% | 2.9% | 73.0% | 9.5% | 54.1% | 54.4% |
 Assessment of treatment burden (n = 308) | 0.435 | 0.613 | 75.0% | 2.9% | 31.4% | 57.0% | 11.0% | 43.5% | 42.8% |
 Medication review (n = 295)b | 0.423 | 0.476 | 39.0% | 41.2% | 11.8% | 62.3% | 12.7% | 54.1% | 43.4% |
 Training of non-physician staff addressing multimorbidity (n = 35)c | 0.416 | 0.479 | 60.6% | -e | -e | -f | 5.7% | -g | -g |
 Monitoring adherence to treatment (n = 313) | 0.387 | 0.474 | 47.0% | 14.7% | 8.8% | 50.3% | 9.5% | -g | -g |
 Monitoring of pain management (n = 203)d | 0.385 | 0.430 | 67.0% | 5.9% | 26.5% | 65.4% | 1.5% | -g | -g |
 Involving partner, family and caregivers (n = 317) | 0.376 | 0.431 | 33.8% | 35.3% | 5.9% | 72.0% | 8.4% | 36.1% | 59.8% |
 Training of physician staff addressing multimorbidity (n = 35)b | 0.372 | 0.438 | 71.4% | -e | -e | -f | 0% | -g | -g |
 Proactive pain assessment (n = 324) | 0.335 | 0.423 | 62.3% | 2.9% | 17.1% | 69.8% | 6.4% | 47.8% | 53.2% |
 Information about benefits and harms of treatment options (n = 318) | 0.332 | 0.488 | 89.0% | 2.9% | 34.3% | 59.2% | 8.1% | 75.9% | 24.1% |
Patient-reported quality indicators | |||||||||
 Eliciting patient preferences (n = 323) | 0.440 | 0.535 | 41.2% | 11.4% | 2.9% | -i | 6.6% | 49.4% | 61.0% |
 Assessment of treatment burden (n = 329) | 0.370 | 0.459 | 24.6% | 28.6% | 0% | -i | 4.9% | 43.5% | 42.8% |
 Information about medication (n = 227)h | 0.362 | 0.311 | 84.1% | 0% | 91.4% | -i | 12.4% | 90.7% | 5.1% |
 Mutual agreement on treatment goals (n = 334) | 0.348 | 0.446 | 50.3% | 8.6% | 5.7% | -i | 3.5% | 54.1% | 54.4% |
 Proactive pain assessment (n = 327) | 0.345 | 0.436 | 30.9% | 14.3% | 0% | -i | 5.5% | 47.8% | 53.2% |
 Medication review (n = 336)b | 0.343 | 0.416 | 69.1% | 2.9% | 5.7% | -i | 0.9% | 54.1% | 43.4% |
 Assigning responsibility for coordination of care (n = 332) | 0.339 | 0.421 | 44.0% | 11.4% | 0% | -i | 4.0% | 33.3% | 61.8% |