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Table 1 Summary of PRA by DBS and hair concentration

From: Comparison of efavirenz levels in blood and hair with pharmacy refills as measures of adherence and predictors of viral suppression among people living with HIV in Nigeria

PRA category

DBS EFV concentration (ng/mL

Hair EFV concentration(ng/mg)

Median (IQR)

Mean rank

Median (IQR)

Mean rank

 ≤ 74%

1183.68 (915.28–2886.43)

41.14

4.25 (4.12–10.1)

31.50

75–94%

1525.86 (1013.14–2795.44)

48.10

6.58 (4.67–10.29)

44.75

 ≥ 95%

1577.62 (1053.64–229,320)

46.18

6.96 (4.76–11.05)

46.18

P value

0.33

   
  1. PRA pharmacy refill adherence, IQR median inter-quartile range