Table 3. Summary of PROM Measurement Properties.
| Instrument | Structural validity | Internal consistency | Reliability | Construct validity | Responsiveness | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Rating | Grade | Rating | Grade | Rating | Grade | Rating | Grade | Rating | Grade | |
| Acne specific | ||||||||||
| Acne Disability Index | Not assessed | NA | Sufficient | NAa | Sufficient | Low | Sufficient | Moderate | Not assessed | NA |
| Acne Impact on Adult Daily Life | Sufficient | High | Sufficient | High | Sufficient | Low | Sufficient | Moderate | Not assessed | NA |
| Acne Severity and Impact Scale | Sufficient | Moderate | Sufficient | Moderatea | Sufficient | Moderate | Sufficient | Moderate | Not assessed | NA |
| Acne-Q | Sufficient | Moderate | Sufficient | Moderatea | Sufficient | Low | Sufficient | Low | Not assessed | NA |
| Acne Quality of Life Scale | Sufficient | Very low | Sufficient | Very lowa | Sufficient | Very low | Sufficient | Low | Not assessed | NA |
| Acne-QoL | Sufficient | Moderate | Sufficient | Moderatea | Sufficient | High | Sufficient | High | Sufficient | Moderate |
| Acne Quality of Life Index | Sufficient | Low | Sufficient | Lowa | Sufficient | Very low | Sufficient | Moderate | Not assessed | NA |
| Assessment of the Psychological and Social Effects of Acne | Not assessed | NA | Not assessed | NA | Not assessed | NA | Sufficient | Low | Sufficient | Low |
| Cardiff Acne Disability Index | Not assessed | NA | Sufficient | NAa | Sufficient | Moderate | Sufficient | High | Sufficient | Very low |
| CompAQ | Sufficient | High | Sufficient | High | Not assessed | NA | Sufficient | High | Not assessed | NA |
| Dermatology specific | ||||||||||
| Dermatology Life Quality Index | Sufficient | Moderate | Sufficient | Moderatea | Sufficient | Low | Not assessed | NA | Sufficient | Very low |
| Children’s Dermatology Life Quality Index | Sufficient | Moderate | Sufficient | Moderatea | Not assessed | NA | Sufficient | Moderate | Not assessed | NA |
| Dermatology-Specific Quality of Life | Insufficient | Moderate | Sufficient | Lowa | Sufficient | Moderate | Sufficient | High | Sufficient | Moderate |
| Oily Skin Self-assessment Scale | Sufficient | Moderate | Sufficient | Moderatea | Inconsistent | High | Inconsistent | Moderate | Not assessed | NA |
| Oily Skin Impact Scale | Sufficient | Moderate | Sufficient | Moderatea | Inconsistent | High | Sufficient | Moderate | Not assessed | NA |
| Skindex-29 | Not assessed | NA | Not assessed | NAa | Sufficient | Moderate | Not assessed | NA | Sufficient | Low |
| General | ||||||||||
| UK Sickness Profile | Not assessed | NA | Sufficient | NAa | Sufficient | Low | Sufficient | High | Not assessed | NA |
| EuroQol 5-Dimension | Not assessed | NA | Not assessed | NA | Not assessed | NA | Not assessed | NA | Sufficient | Very low |
| SF-36 | Not assessed | NA | Not assessed | NA | Not assessed | NA | Not assessed | NA | Sufficient | Very low |
| Patient Benefit Index | Not assessed | NA | Sufficient | NAa | Insufficient | Very low | Sufficient | Very low | Sufficient | Very low |
| Patient-Reported Outcomes Measurement Information System–Anxiety | Not assessed | NA | Not assessed | NA | Not assessed | NA | Sufficient | Very low | Sufficient | Very low |
Abbreviations: NA, not applicable; PROM, patient-reported outcome measure; QoL, quality of life; SF-36, Short Form-36.
a
Of note, since assessment of internal consistency depends on available evidence for structural validity (unidimensionality is a prerequisite for interpretation of internal consistency analyses), per the COSMIN guidelines, the quality of evidence for structural validity was considered the starting point to determine the quality of evidence for internal consistency.