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Table 1 CD4 T cell counting in Yaoundé suburb and Ambang Bikok village obtained by the Auto40 flow cytometer installed in a therapeutic mobile unit, and by the FACSCalibur at the reference laboratory, expressed in 5th-95th percentile and mean.

From: Validation of a single-platform, volumetric, flow cytometry for CD4 T cell count monitoring in therapeutic mobile unit

  n* 5th- 95th percentile Mean ± SD P value**
Yaoundé suburb 188    
. Absolute CD4 T cells***     
   - Auto40   111-2624 996 ± 874  
   - FACSCalibur   110-2620 989 ± 883 NS
. Percent CD4 T cells     
   - Auto40   6.0-48.0 27.1 ± 13.6  
   - FACSCalibur   6.0-49.0 36.7 ± 13.1 NS
Ambang Bikok 69    
. Absolute CD4 T cells     
   - Auto40   530-1585 1041 ± 317  
   - FACSCalibur   585-1511 1032 ± 294 NS
. Percent CD4 T cell     
   - Auto40   26.8-52.0 38.5 ± 7.9  
   - FACSCalibur   26.2-51.8 37.5 ± 8.0 NS
  1. * Number of blood samples with successful CD4 T cells counting by both Auto40 and FACSCalibur;
  2. ** P value for comparison of mean ± SD by Auto40 versus FACSCalibur taken as reference;
  3. *** Absolute CD4 T cells are expressed in cells/μl.
  4. SD: Standard deviation; NS: Not significant