Categories | < 200 cells/μl | 200 – 350 cells/μl | > 350 cells/μl | |
---|---|---|---|---|
Number | N = 27 | N = 43 | N = 188 | |
Absolute CD4 T cells (cells/ μl)* | ||||
Apogee Auto40 | Mean ± SD | 118 ± 161 | 278 ± 129 | 2990 ± 3745 |
FACSCalibur | Mean ± SD | 100 ± 135 | 215 ± 103 | 3017 ± 3756 |
Absolute bias (limits of agreement)a | Mean (±1.96 SD) | −4.0 (−33.8;+25.8) | 10.0 (−70.0;+90.0) | 12.0 (−160.7;+184.7) |
Relative (%) bias (limits of agreement)b | Mean (±1.96 SD) | 62.0 (−134.0;+258.0) | 7.0 (−27.2;+41.2) | −3.0 (−12.4;+6.4) |
Percent CD4 T cells (%CD4)** | ||||
Apogee Auto40 | Mean ± SD | 10.0 ± 12.7 | 19.5 ± 6.3 | 55.1 ± 44.5 |
FACSCalibur | Mean ± SD | 9.0 ± 11.3 | 18.0 ± 4.2 | 53.3 ± 41.7 |
Absolute bias (limits of agreement)a | Mean (±1.96 SD) | 1.0 (−1.8;+3.8) | 2.0 (−2.3;+6.3) | 2.0 (−3.4;+7.4) |
Relative (%) bias (limits of agreement)b | Mean (±1.96 SD) | 6.0 (−10.3;+22.3) | 7.0 (−13.2;+27.2) | 2.0 (−4.6;+8.6) |