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. 2018 Oct 29;19:589. doi: 10.1186/s13063-018-2983-y

Table 3.

Registered trials confirmed as using qualitative methods by country income by registry

Country income category Gross national income WHO ICTRP ClinicalTrials.gov ISRCTN Total
Low $1005 or less 0 (0%) 14 (73.6%) 5 (26.3%) 19 (1.3%)
Low-middle $1006–$3955 2 (7%) 21 (72.4%) 6 (20.7%) 29 (1.9%)
Upper-middle $3956–$12,235 5 (11%) 41 (89.1%) 1 (2.17%) 47 (3.1%)
High $12,236 or more 91 (7%) 802 (57.4%) 504 (36.1%) 1397 (93.7%)

ICTRP International Clinical Trials Registry Platform, ISRCTN International Standard Randomised Controlled Trial Number Registry, WHO World Health Organisation