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Table 2 Agreement between pill counts and caregiver self-report classification of adherent (adherence ≥ 90%) or non-adherent (adherence < 90%).

From: Adherence to isoniazid prophylaxis among HIV-infected children: a randomized controlled trial comparing two dosing schedules

  Adherent by pill count Non-adherent by pill count Total
Adherent by self-report 225 (71%) 56(18%) 281
Non-adherent by self-report 19(6%) 16(5%) 35
Total 244 72 316
  1. Numbers are expressed as percentages of total number of visits (n = 316); adherence estimates are based on a single visit evaluation and limited to visits where both measures were used.
  2. * Chi squared 11.76, Fisher's exact test, p = 0.002