Soil-transmitted helminth (STH) infection prevalence and intensity at the a) 12-month (n = 880)*1, b) 18-month (n = 807)*2 and c) 24-month (n = 1563)*3 follow-up visits by intervention group, Iquitos, Loreto, Peru (September 2011-July 2013).

* STH results at all visits include only children whose specimens were analyzed by the Kato-Katz method (i.e. 1Group 1 and Group 3 at 12-month visit; 2Groups 2 and 3 at 18-month visit (results were not available for 73 children who were lost to follow-up); 3All groups at the 24-month visit (results were not available for 197 children who were lost to follow-up))ǂ1Group 1 (MBD/PBO) = mebendazole at the 12-month visit and placebo at the 18-month visit2Group 2 (PBO/MBD) = placebo at the 12-month visit and mebendazole at the 18-month visit3Group 3 (MBD/MBD) = mebendazole at the 12 and 18-month visit4Group 4 (PBO/PBO) = placebo at the 12 and 18-month visit†AM = arithmetic mean eggs per gram§GM = geometric mean eggs per gram. A value of 1 was added to each observation to calculate the geometric mean.The prevalence of stunting and underweight increased from 24.2% and 8.6% at baseline to 46.8% and 10.2%, respectively, at the 24-month visit.Soil-transmitted helminth (STH) infection prevalence and intensity at the a) 12-month (n = 880)*1, b) 18-month (n = 807)*2 and c) 24-month (n = 1563)*3 follow-up visits by intervention group, Iquitos, Loreto, Peru (September 2011-July 2013).