Table 1.
Distribution of study characteristics among three CHDS generations: grandmothers (F0), daughters (F1) and granddaughters (F2)
| Grandmothers (F0), n=258 | Daughters (F1), n=258 | Granddaughters (F2), n=258 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Percentile | Percentile | Percentile | ||||||||||
| Study variable | Mean (SD) | 25th | 50th | 75th | Mean (SD) | 25th | 50th | 75th | Mean (SD) | 25th | 50th | 75th |
| Year of Birth | 1936 (6.6) | 1931 | 1937 | 1941 | 1962 (1.8) | 1961 | 1962 | 1964 | 1989 (3.6) | 1987 | 1990 | 1993 |
| Year of Interview | 1962 (1.8) | 1961 | 1962 | 1964 | 2011 (0.7) | 2011 | 2012 | 2012 | 2013 (0.0) | 2013 | 2013 | 2013 |
| Age (years) | 26 (6.0) | 22 | 25 | 31 | 49 (2.0) | 48 | 49 | 51 | 26 (4.4) | 22 | 26 | 29 |
| Weight (kg) | 62.9 (14.0) | 53.7 | 59.3 | 69.0 | 70.8 (16.4) | 59.0 | 65.8 | 77.1 | 76.9 (23.4) | 61.0 | 70.05 | 89.0 |
| Height (m) | 1.62 (0.07) | 1.57 | 1.63 | 1.68 | 1.66 (0.07) | 1.60 | 1.65 | 1.70 | 1.66 (0.07) | 1.62 | 1.66 | 1.71 |
| Body Mass Index (kg/m2) | 23.9 (5.1) | 20.9 | 22.5 | 25.6 | 25.8 (5.6) | 22.0 | 23.9 | 29.2 | 28.0 (8.4) | 21.8 | 25.1 | 32.9 |
| Age at menarche (years) | 12.7 (1.4) | 12 | 13 | 13 | 12.8 (1.8) | 12 | 13 | 14 | 12.4 (1.6) | 11 | 12 | 13 |
| Parity | 1.8 (2.0) | 0 | 1 | 3 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
| Year of blood draw | 1962 (1.8) | 1961 | 1962 | 1964 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
| p,p’-DDT (ng/mL) | 14.5 (10.4) | 7.1 | 11.6 | 19.8 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
| o,p’-DDT (ng/mL) | 0.66 (0.67) | 0.24 | 0.45 | 0.86 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
| p,p’-DDE (ng/mL) | 48.5 (23.8) | 31.6 | 43.4 | 60.4 | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
| N (%) | N (%) | N (%) | ||||||||||
| Race | ||||||||||||
| African American | 78 (30%) | 84 (33%) | 73 (33%)1 | |||||||||
| Asian | 6 ( 3%) | 4 ( 2%) | 12 ( 5%)1 | |||||||||
| Hispanic | 13 ( 5%) | 17 ( 6%) | 17 ( 8%)1 | |||||||||
| White | 153 (59%) | 146 (56%) | 117 (53%)1 | |||||||||
| Other/Mixed | 8 ( 3%) | 7 ( 3%) | 3 ( 1%)1 | |||||||||
| Education | ||||||||||||
| <High School | 53 (22%)2 | 12 ( 4%) | 13 ( 6%)3 | |||||||||
| High School | 89 (37%)2 | 31 (12%) | 48 (22%)3 | |||||||||
| Some College | 52 (22%)2 | 105 (41%) | 115 (54%)3 | |||||||||
| ≥College | 44 (19%)2 | 110 (43%) | 38 (18%)3 | |||||||||
| BMI | ||||||||||||
| <25kg/m2 | 182 (71%) | 153 (59%) | 129 (50%) | |||||||||
| ≥25 --<30kg/m2 | 52 (20%) | 47 (18%) | 47 (18%) | |||||||||
| ≥30kg/m2 | 24 ( 9%) | 58 (23%) | 82 (32%) | |||||||||
1
F2 missing on race, n=36.
2
F0 missing on education, n=20.
3
F2 missing on education, n=44.