Analysis of covariance †
  Stroke patients (n=18) Healthy controls (n=22) F (1, 36) p
Helper T lymphocyte (% CD3+) 67.2 ± 15.1 61.5 ± 12.0 1.00 0.32
Cytotoxic T lymphocyte (% CD3+) 27.9 ± 13.5 33.2 ± 10.6 0.92 0.35
B lymphocyte (% lymphocyte) 17.7 ± 8.3 12.2 ± 7.8 5.42 0.03
NK cell (% lymphocyte) 21.6 ± 11.3 27.5 ± 10.4 1.78 0.19
Regulatory T lymphocyte (% CD4+) 2.1 ± 1.6 3.8 ± 2.3 7.89 0.008 *
† Age and sex were entered as covariates; Data are the mean ± SD. * Significant after correction for multiple statistical tests to avoid type I errors (p < 0.01 [0.05/5]); NK: Natural Killer
Table 3: Percentages of circulating lymphocytes in patients and healthy control subjects.