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Table 5 Log-rank test of probability of survival (i.e. remaining re-infection free), by age group and day 7 lumefantrine concentration.

From: Supervised versus unsupervised antimalarial treatment with six-dose artemether-lumefantrine: pharmacokinetic and dosage-related findings from a clinical trial in Uganda

C [lum]day7 (ng/mL) < 5 years 5–14 years ≥15 years Total
  nc nr psurv nc nr psurv nc nr psurv nc nr psurv
<200 47 5 0.889 32 4 0.871 33 2 0.938 112 11 0.898
200–399 51 3 0.940 77 2 0.987 63 2 0.968 191 7 0.968
400–599 20 0 1.000 34 0 1.000 33 0 1.000 87 0 1.000
≥600 11 0 1.000 30 0 1.000 21 0 1.000 62 0 1.000
p-value (trend): 0.002 0.283 0.399 <0.001
  1. nc = number in category nr = number of re-infections psurv = probability of survival