TABLE 1.
Characteristics of participants (N = 1427)
| Variable | n | % |
|---|---|---|
| Age at baseline (years) | ||
| 23–25 | 304 | 21 |
| 26–28 | 363 | 25 |
| 29–31 | 392 | 27 |
| 32–35 | 368 | 26 |
| Education | ||
| ≤High school or GED | 300 | 21 |
| Some college | 730 | 51 |
| Bachelors/Masters/PhD | 396 | 28 |
| Missing | 1 | -- |
| Body mass index (kg/m2) | ||
| <25 | 288 | 20 |
| 25-<30 | 295 | 21 |
| 30-<35 | 270 | 19 |
| ≥35 | 574 | 40 |
| Parity | ||
| Never pregnant | 376 | 26 |
| 0 | 178 | 12 |
| 1 | 379 | 27 |
| 2 | 259 | 18 |
| ≥3 | 235 | 16 |
| Smoking | ||
| Never | 1055 | 74 |
| Former | 103 | 7 |
| Current | ||
| <10 cigarettes/day | 195 | 14 |
| ≥10 cigarettes/day | 74 | 5 |
| Length of interval between baseline and follow-up (months) | ||
| 16 | 118 | 8 |
| 17–22 | 1166 | 82 |
| 23–25 | 132 | 9 |
| 26–28 | 11 | 1 |
| Number of fibroids | ||
| 0 | 1123 | 79 |
| 1 | 190 | 13 |
| 2 | 49 | 3 |
| 3 | 30 | 2 |
| 4 | 13 | 1 |
| ≥5 | 22 | 2 |
| Size of largest fibroid (among 304 with fibroids)a | ||
| <0.52 cm3 [<1 cm diameter] | 85 | 28 |
| 0.52 – <4.19 cm3 [1 cm – <2 cm diameter] | 116 | 38 |
| 4.19 – <14.1 cm3 [2 cm – <3 cm diameter] | 48 | 16 |
| 14.1 – <33.5 cm3 [3 cm – <4 cm diameter] | 25 | 8 |
| ≥33.5 cm3 [≥4 cm diameter] | 30 | 10 |
a
Diameter equivalency of the fibroid volume shown in brackets.