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Table 2 Methodological quality of PROMs and quality of measurement properties

From: The validity and reliability of quality of life questionnaires in patients with ankylosing spondylitis and non-radiographic axial spondyloarthritis: a systematic review and meta-analysis

PROM (ref)

Country /language in which the PROM was evaluated

Structural validity

Internal consistency

Reliability

Construct validity

n

Meth qual

Result (rating)

n

Meth qual

Result (rating)

n

Meth qual

Result (rating)

n

Meth qual

Result (rating)

ASQOL [8, 15,16,17,18,19,20,21,22,23,24,25, 31]

New Zealand, United States, Canada, Germany, France, Italy, Spain, Sweden, Turkish, Chinese, Singapore, Spain, Netherlands, Persian, Greek

1650

?

Moderate

1929

+

High

1348

+

High

1830

?

Moderate

EASi-QoL [28, 29]

Turkish, England

712

 ± 

Moderate

712

+

Moderate

712

+

Moderate

100

+

Very low

EuroQoL [14]

England

321

Very low

321

?

Very low

176

+

Very low

176

+

Very low

SF-12 [14]

England

321

Very low

321

?

Very low

321

+

Very low

321

?

Very low

SF-36 [26]

England

196

Very low

196

 ± 

Very low

NR

NR

NR

196

 ± 

Very low

PGI [27]

England and Scotland

343

?

Very low

NR

?

Very low

69

+

Very low

343

?

Very low

CASQ-QoL [30]

Arabic

122

?

Very low

122

+

Very low

122

+

Very low

NR

NR

NR

RLQD [20]

England

271

?

Very low

271

+

Very low

179

+

Very low

271

+

Very low

SQOL-AS [32]

China

37

NR

NR

37

+

Very low

NR

NR

NR

NR

NR

NR

EQ-5D

Netherlands

NR

NR

NR

NR

NR

NR

NR

NR

NR

NR

NR

NR

SF-6D

Netherlands

NR

NR

NR

NR

NR

NR

NR

NR

NR

NR

NR

NR

Modified AS-AIM2 [34]

Lorraine region

146

?

Very low

146

+

Very low

43

+

Very low

NR

NR

NR

  1. +, sufficient; −, insufficient; ?, indeterminate; ±, inconsistent; NR, not report