Table 3.
Correlation between T-cell subpopulations and CD28 or HLA-DR expression on CD4+ and CD8+ T cells
| Variable | CD28 on CD4+T | CD28 on CD8+T | HLA-DR on CD4+T | HLA-DR on CD8+T | |
|---|---|---|---|---|---|
| Lymphocytes % | r | 0·125 | 0·003 | −0·311 | −0·333 |
| P | 0·159 | 0·978 | 0·001 | < 0·001 | |
| Lymphocytes (/mm3) | r | 0·150 | 0·072 | −0·374 | −0·144 |
| P | 0·089 | 0·416 | < 0·001 | 0·147 | |
| CD3+ T cells % | r | −0·003 | −0·265 | 0·003 | −0·031 |
| P | 0·974 | 0·002 | 0·980 | 0·755 | |
| CD3+ T cells (/mm3) | r | 0·085 | −0·057 | −0·258 | −0·149 |
| P | 0·338 | 0·522 | 0·009 | 0·132 | |
| CD4+ T cells % | r | 0·500 | 0·343 | −0·552 | −0·133 |
| P | 0·000000 | < 0·0001 | 0·000000 | 0·180 | |
| CD4+ T cells (/mm3) | r | 0·441 | 0·303 | −0·616 | −0·174 |
| P | 0·000000 | < 0·001 | 0·000000 | 0·078 | |
| CD8+ T cells % | r | −0·314 | −0·499 | 0·341 | −0·005 |
| P | < 0·001 | 0·000000 | < 0·001 | 0·958 | |
| CD8+ T cells (/mm3) | r | −0·080 | −0·217 | −0·026 | −0·084 |
| P | 0·369 | 0·013 | 0·792 | 0·401 | |
| CD4/CD8 ratio | r | 0·566 | 0·510 | −0·637 | −0·122 |
| P | 0·000000 | 0·000000 | 0·000000 | 0·220 |
Linear correlations were tested by using Spearman rank method in STATISTICA software. r: Spearman correlation coefficient.