Spondyloarthritis & psoriatic arthritis
Cross-cultural adaptation and preliminary diagnostic performance assessment of the psoriasis epidemiology screening tool (PEST) questionnaire in Spanish
Authors' conclusion
The Spanish version of the PEST questionnaire (PEST-S) demonstrated excellent diagnostic performance in distinguishing PsA from Ps and OA in a Spanish-speaking population.
Study context
- Population
- Adult patients with PsA, Ps, OA and Ps + OA (Spanish-speaking population)
- Participants
- 124 patients
- Comparison
- PEST-S score ≥3 vs CASPAR classification of PsA
- PsAn = 32
- Psn = 31
- Ps + OAn = 33
- OAn = 28
- Outcome
- Diagnostic performance of PEST-S (sensitivity, specificity, likelihood ratios, AUC, Cohen's kappa) for identifying PsA vs CASPAR
Methodological detailscross-sectional, cross-cultural adaptation
- Cross-sectional
- Cross-cultural adaptation
Performance
As reported in the abstract
PEST-S score ≥3 for identifying PsA
| Test or model | Sensitivity | Specificity | LR+ | LR- | AUC | Agreement with CASPAR | κ |
|---|---|---|---|---|---|---|---|
| PEST-S ≥3 | 100% | 94.2% | 17.2 | 0 | 0.97 (95% CI: 0.95-0.99) | 93.2% | 0.838 |
PEST-S ≥3
Sensitivity100%
Specificity94.2%
LR+17.2
LR-0
AUC0.97 (95% CI: 0.95-0.99)
Agreement with CASPAR93.2%
κ0.838
Further findings
Individual PEST-S items, PsA vs other diagnostic groups
- Statistically significant difference in responses to all five PEST-S items between PsA and the other groups
- P < 0.05
Time to complete questionnaire
- Less than 1 min to complete
Original publication
Cross-cultural adaptation and preliminary diagnostic performance assessment of the psoriasis epidemiology screening tool (PEST) questionnaire in Spanish. Rheumatology (Oxford). Published 16 October 2025. doi:10.
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