Table 2.
Summary Statistics on Variables Measured in 15 Utah Genetic Reference Project (CEPH) Families Used for Linkage Analysis[Note]
| Variable | No. | Mean | SD | MinimumValue | MaximumValue |
| Lymphocyte count | 142 | 1.29 | .45 | .18 | 2.63 |
| CD19 level | 138 | .16 | .08 | .02 | .41 |
| NK level | 83 | .06 | .04 | .001 | .21 |
| CD4 level | 142 | .59 | .24 | .08 | 1.4 |
| CD8 level | 142 | .36 | .16 | .05 | .94 |
| CD4:CD8 ratio | 142 | 1.81 | .83 | .19 | 6.25 |
| Age | 100 | 42.54 | 18.76 | 18 | 90 |
Note.— With the exception of CD4:CD8 ratio and age, values are expressed in millions per milliliter.