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Table 1 Base line characteristics of the study population

From: Temporal trends of molecular markers associated with artemether-lumefantrine tolerance/resistance in Bagamoyo district, Tanzania

  Study 1 Study 2 Study 3 Study 4 Study 5 Study 6
Year 2004 2006 2007 2008 2010 2011
Study period May Jun May – Nov Aug-Oct Oct-Dec + Jan 2011 Apr-Jun
Patients included (n) 106 50 258 200 33 130
Sex, female patients (%) 51 62 54 49 49 50
Age, months, median (range) 31 (6–135) 48 (12–119) 31 (4–60) 36 (2–124) N.D 60 (12–120)
Weight, kg, median (range) 12 (6–33) 13 (8–30) 12 (5–21) 12 (5–33) 13 (6–29) 15 (8–32)
Parasites/μL, geometric mean (range) 21,595 (2,000-160,000) 36,885 (2,120-200,400) 43,259 (2,700-192,320) 17,531 (2,000-192,000) 18,537 (2,400-185,120) 10,198 (1,080-112,800)
Slide positivity rate, microscopy positive/screened (%) 175/434 (40%) 148/277 (53%) 718/1403 (51%) 473/745 (63%) 99/588 (17%) 599/1002 (60%)