Table 1 Demographic characteristics of same sex twin pairs from the Washington State Twin Registry, 2009–2015
Total | Men | Women | |
|---|---|---|---|
(n = 5787) | (n = 1988) | (n = 3799) | |
Age | 42.7 (17.9) | 43.2 (18.9) | 42.5 (17.4) |
BMI (kg/m2) | 26.0 (5.7) | 26.3 (4.6) | 25.9 (6.2) |
Race (% White) | 91.7 | 95.7 | 89.4 |
Household income (%) | |||
< 20 k | 13.5 | 11.8 | 14.4 |
20 k – 29,999 k | 8.4 | 8.1 | 8.6 |
30 k – 39,999 k | 8.9 | 8.0 | 9.4 |
40 k – 49,999 k | 8.4 | 7.3 | 9.0 |
50 k – 59,999 k | 7.0 | 7.7 | 8.0 |
60 k – 69,999 k | 7.5 | 7.3 | 7.7 |
70 k – 79,999 k | 7.2 | 6.9 | 7.3 |
80 k+ | 37.2 | 42.8 | 35.7 |
Education (%) | |||
Less than high school | 3.2 | 4.3 | 2.6 |
High school/GED | 16.0 | 17.4 | 15.3 |
Some college | 34.9 | 31.9 | 36.5 |
Bachelor’s degree | 26.4 | 25.9 | 26.6 |
Graduate/professional degree | 19.6 | 20.6 | 19.0 |
Soda consumption per day (%) | |||
No soda | 60.0 | 55.6 | 62.4 |
1–2 sodas | 29.4 | 31.6 | 28.2 |
3–4 sodas | 6.3 | 7.6 | 5.6 |
5+ sodas | 4.3 | 5.3 | 3.8 |