Table 2. Variance components for telomere length measurements estimated from linear mixed model.
| Var(between subject) | var(subject-visit) | Residual | |||||
| No. | σ2 (SE) a | % total variance | σ2 (SE) a | % total variance | σ2 (SE) a | % total variance | |
| All women | 27 | 37.8 (10.5) | 63.8 | 2.9 (0.7) | 4.9 | 18.6 (0.9) | 31.3 |
| Age <45 y | 10 | 51.2 (23.2) | 72.1 | 2.4 (1.0) | 3.4 | 17.3 (1.3) | 24.5 |
| Age ≥ 45 y | 17 | 30.0 (10.6) | 57.4 | 3.2 (0.9) | 6.1 | 19.0 (1.1) | 36.5 |
| Premenopause | 16 | 38.1 (13.7) | 64.0 | 3.0 (0.9) | 5.0 | 18.4 (1.1) | 31.0 |
| Postmenopause | 11 | 35.4 (15.4) | 63.0 | 2.9 (1.0) | 5.1 | 18.0 (1.3) | 32.0 |
| White | 16 | 29.9 (10.9) | 57.4 | 2.5 (0.9) | 4.8 | 19.7 (1.2) | 37.8 |
| African American | 11 | 40.9 (17.9) | 66.9 | 3.5 (5.7) | 5.7 | 16.7 (1.2) | 27.4 |
a
Values shown are the estimates X 1000 for easier reading.