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. 2022 Apr 29;15:17562848221092594. doi: 10.1177/17562848221092594

Table 1.

Characteristics of studies included in meta-analysis.

Study (year) Study design Country N Endoscope technology Activity scores Endoscopy versus histology
WLE Advanced Endoscopic Histological Correlation coefficient Accuracy assessed a
Fluxá et al. 15 Prospective Chile 91 SD – MES Geboes Spearman’s –
Frieri et al. 16 Prospective Italy 52 SD – MES Gupta Spearman’s –
Irani et al. 17 Prospective UK 125 SD – UCEIS NI, RHI Spearman’s –
Lemmens et al. 18 Retrospective Belgium 263 NA b – MES Geboes Kendall’s –
Lobatón et al. 19 Prospective Belgium 96 HD – MES Geboes Spearman’s –
Osterman et al. 20 Prospective USA 101 HD – MES Total Riley Spearman’s –
Rosenberg et al. 21 Prospective USA 103 HD – MES Geboes Spearman’s –
Simsek et al. 22 Retrospective Turkey 109 NA b – EAI HSS Kendall’s Yes
Kim et al. 23 Retrospective Korea 82 HD – MES Geboes Spearman’s –
Iacucci et al. 24 Retrospective Canada 78 – i-SCAN i-SCAN NYMS Spearman’s –
Iacucci et al. 25 Retrospective Multicentre 160 HD i-SCAN MES, PICaSSO RHI Kendall’s Yes
Iacucci et al. 26 Prospective Canada 41 HD i-SCAN MES, i-SCAN-OE RHI Spearman’s Yes
Iacucci et al. 27 Prospective Canada 82 HD i-SCAN MES, PICaSSO RHI – c Yes
Iacucci et al. 28 Prospective Multicentre 302 HD i-SCAN MES, PICaSSO RHI Pearson’s Yes
Honzawa et al. 29 Retrospective Japan 15 HD i-SCAN MES Geboes Kendall’s –
Trivedi et al. 30 Retrospective Multicentre 72 HD i-SCAN PICaSSO NYMS Spearman’s –
Kanmura et al. 31 Prospective Japan 73 HD LCI MES Geboes Spearman’s Yes

EAI, Rachmilewitz endoscopic activity index; HD, high definition; HSS, Harpaz histopathological activity scoring system; MES, Mayo Endoscopic Score; NI, Nancy Index; NYMS, New York Mount Sinai Score; PICaSSO, Paddington International virtual ChromoendoScopy ScOre; RHI, Robarts Histopathology Index; SD, standard definition; UCEIS, Ulcerative Colitis Endoscopic Index of Severity; WLE, White light endoscopy.

a

Indicates those studies that assessed the predictive accuracy of a dichotomized endoscopic activity score to predict the presence of activity on histology.

b

The study stated that WLE was used, but it was unclear whether this was SD or HD.

c

The study was designed specifically to assess the ability of endoscopy to identify patients in clinical remission, and so they did not report a correlation coefficient.