Demographic characteristics of participants based on imaging modality
| Characteristic | No. of participants (%)* | p value | |
|---|---|---|---|
| Ultrasonography n = 1148 | MRI n = 135 | ||
| Age, yr, mean ± SD | 43.22 ± 6.69 | 40.24 ± 7.30 | < 0.001 |
| Body mass index, mean ± SD | 27.28 ± 6.29 | 27.20 ± 7.04 | 0.9 |
| Nulliparous | 483 (42.1) | 91 (67.4) | < 0.001 |
| Nulligravid | 358 (31.1) | 61 (45.1) | 0.001 |
| Family history of fibroids, yes v. no or unknown | 401 (34.9) | 46 (34.1) | 0.9 |
| Previous procedural intervention for fibroid, yes v. no or unknown | 251 (21.8) | 29 (21.4) | 1.0 |
| History of bulk symptoms, yes v. no or unknown | 663 (57.7) | 90 (66.6) | 0.06 |
| Maximum fibroid diameter, mm; mean ± SD | 75.56 ± 36.01 | 90.15 ± 34.67 | < 0.001 |
| No. of fibroids | |||
| 1 | 408 (35.5) | 35 (25.9) | < 0.001 |
| 2 | 191 (16.6) | 20 (14.8) | |
| 3 | 135 (11.7) | 6 (4.4) | |
| 4 | 45 (3.9) | 5 (3.7) | |
| > 4 | 101 (8.8) | 17 (12.6) | |
| Multiple or not specified | 268 (23.3) | 52 (38.5) | |
| Score for UFS-QOL, mean ± SD | 50.25 ± 23.41 | 46.45 ± 22.77 | 0 |
| Score for HRQoL, mean ± SD | 50.45 ± 25.23 | 52.05 ± 26.39 | 0.5 |
| Score for AMSS, mean ± SD | 37.07 ± 8.89 | 31.85 ± 20.74 | 0.003 |
| Academic centre | 622 ± 54.2 | 84 ± 62.2 | 0.09 |
| Region | |||
| Western Ontario | 160 (13.9) | 16 (11.8) | 0.076 |
| Eastern Ontario | 131 (11.4) | 24 (17.7) | |
| Central Ontario | 264 (22.9) | 29 (21.4) | |
| Quebec | 267 (23.2) | 21 (15.5) | |
| Western Canada | 313 (27.2) | 42 (31.1) | |
| Small city size | 437 (38.0) | 41 (30.3) | 0.098 |
↵* Except where noted otherwise.
Note: AMSS = Aberdeen Menorrhagia Severity Scale, HRQoL = health-related quality of life questionnaire, SD = standard deviation, UFS-QOL = Uterine Fibroid Symptom and Health-Related Quality of Life questionnaire.