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Table 2 Sensitivity of PIMA analyzer to identify patients with CD4 count <350; a cut off used for ART initiation

From: Utility of the point of care CD4 analyzer, PIMA, to enumerate CD4 counts in the field settings in India

Reference method PIMA analyzer
  N Sensitivity Specificity Mean Relative bias (±2SD)
FACSCalibur 121 96% 91% 4(−48, 56)
FACSCount 206 92% 91% −5( −49, 59)
Partec 550 91% 96% 8(−8.4, -7.6)