14781-koppen

40 Chapter 1 TABLE 2. Studies on prevalence FNRFI ( n =15) Study, year Country Population Sample size, number (%males) Age (years) Method of data collection Case definition Prevalence FNRFI, number (%) F:M ratio Asia Bhatia, 2016 18 India School sample (4 schools) 1115 (n/a) 10-17 Child questionnaire QPGS-RIII in Hindi † 5 (0.4) n/a Devanarayana 2011 19 Sri Lanka School sample (1 school) 427 (50.1) 12-16 Child questionnaire QPGS-RIII in Sinhalese † 1 (0.2) n/a Rajindrajith, 2016 52 Sri Lanka School sample (4 schools) 1807 (53.8) 13-18 Child questionnaire QPGS-RIII in Sinhalese † 2 (0.1) n/a Rajindrajith, 2010 53 Sri Lanka School sample (5 schools) 2686 (50.7) 10-16 Child questionnaire Rome III criteria 10 (0.4) n/a Sagawa, 2013 26 Japan School sample (40 schools) 3976 (46.4) 10-17 Child questionnaire QPGS-RIII in Japanese † 8 (0.2) 2.8:1 Shau, 2016 27 Taiwan School sample (8 schools) 2034 (49.3) 12-19 Child interview QPGS-RIII in Taiwanese † 0 (0.0) n/a South America Costa, 2011 34 Brazil School sample (5 schools) 1077 (46.0) 10-18 Child questionnaire Modified Rome III criteria 3 (0.3) n/a Dhroove, 2016 35 Mexico School sample (2 schools) 362 (53.6) 8-18 Child questionnaire QPGS-RIII in Spanish † 1 (0.3) n/a Jaime, 2017 37 Chile School sample (3 schools) 506 (48.0) 7-19 Child/parental questionnaire QPGS-RIII in Spanish † 3 (0.6) n/a Játiva, 2016 38 Ecuador School sample (2 schools) 417 (51.1) 8-15 Child questionnaire QPGS-RIII in Spanish † 1 (0.2) n/a Saps, 2014 41 Colombia School sample (2 schools) 373 (49.3) Mean age 10 Child questionnaire QPGS-RIII in Spanish † 6 (1.6) n/a Central America Lu, 2016 49 Panama School sample (3 schools) 321 (38.9) 8-14 Child questionnaire QPGS-RIII in Spanish † 0 (0.0) n/a Zablah, 2015 50 El Salvador School sample (2 schools) 399 (41.1) 8-15 Child questionnaire QPGS-RIII in Spanish † 0 (0.0) n/a