Table 1 Total number of patients in studies included to calculate sensitivity and specificity in regards of detecting sacroiliitis in patients with: established AS (n = 361), in subgroup with grade 2/3 findings (n = 244), in subgroup with grade 4 findings (n = 71), in patient group with suspected sacroiliitis (n = 255) and in MLBP control group (n = 60)
NPatients with AS, all gradings (group A)Patients with AS grade 2/3 (group B)Patients with AS grade 4 (group C)Patients with suspected sacroiliitis (group D)Controls: patients with MLBP (group E)Reference (first author)
111210482512Goei The, 198537
2311516xxDomeij-Nyberg, 198036
335308xxRussell, 197523
419163xxBerghs, 197828
517xxxxVan Laere, 197234
63232x14xSzanto, 197746
7xxxx10Fam, 198538
81616xxxJee, 200435
9642xxYildiz, 200139
10542xxDocherty, 199247
11642xxDavis, 198440
12271413xxScott, 198041
13xxx1814Miron, 198342
14xxx711Battafarano, 199349
151257xxPeh, 199748
1610x1011xNamey, 197724
1733xxx13Schorner, 198143
18xxx17xBlum, 199650
19xxx12xEsdaile, 198029
20xxx6xHo, 197931
21xxx31xBozkurt, 200151
22xxx52xDunn, 198044
23xxx17xLentle, 197752
24xxx24xHanly, 199453
25xxx21xInanc, 200545
All3612447125560Pooled data
  • AS, ankylosing spondylitis; MLBP, mechanical low back pain; x, no data available.