Page 59 - Recognizing axial spondyloarthritis - Janneke de Winter

DISEASE MANIFESTATIONS IN AXIAL SPA
57
THREE
Supplementary Table 2. Estimation of bias
General
Funding + Role of funding + organization
+ + ? +
+ ? + ? ? + ? ? ? ?
Conflict of interest + Ethical approval + Aim of study: + included differences between AS/nr‐
+‐ + + + + +
+‐ + ? + + + + + + + +‐ + + +‐ +
Poor reporting ?
axSpA
Study design + (retrospective = possible bias)
+ +
+ + + + +
Total low External validity Sampling of subjects +‐ Nongeneral +‐ population based sampling method
low low
low low low low low
Nongeneral +‐ population based sampling frame
+‐ +
+ + +‐ + +
Assessment of ? sampling bias
? ? ? +
? ? ? ? ? ? + ? + ?
Response rate in + total sample (% missing)
Study Gespic Kiltz Esperanza
SCQM SPACE Wallis Desir ESPAC
For all criteria:
Low risk of bias +
Minor risk of bias +‐ Major risk of bias ‐
+ + +‐ +
+ +‐ +‐ + + + +‐ +‐ + +
Supplementary Table 2 continues