Table 1.
Comparison of sampling frameworks by site and cohort, ENDO Study, 2007–2009 (n=626).
| Sampling Framework | California – Operative (n=63) # (%) | Utah – Operative (n=432) # (%) | California – Population (n=36) # (%) | Utah – Population (n=95) # (%) |
|---|---|---|---|---|
| # Women scheduled for surgery reviewed | 614 | 2,348 | -- | -- |
| # Surgical women not screened | 205 (33) (insufficient time; 21% unable to contact 15%) | 699 (30) (unable to contact; 24% insufficient time 22%) | -- | -- |
| # Surgical women screened | 409 (67) | 1,649 (70) | -- | -- |
| # Households contacted | -- | -- | 750 | 1,686 |
| # Households not screened (leading reason) | -- | -- | 692 (92) (reached enrollment; 82%) | 1,528 (91) (reached enrollment; 81%) |
| # Women screened | 409 (67) | 1,649 (70) | 58 (7) | 159 (9) |
| # Not eligible | 324 (79) (age; 72%) | 1,103 (67) (age; 67%) | 10 (17) (age; 30%) | 45 (28) (prior Hx; 27%) |
| # Eligible | 85 (21) | 546 (33) | 48 (83) | 114 (72) |
| # Refusals | 22 (26) (too busy; 45%) | 114 (21) (other reasons; 19%) | 12 (25) (other; 42%) | 19 (17) (too busy; 63%) |
| # Enrolled | 63 (74) | 432 (79) | 36 (75) | 95 (83) |
| # Withdrawals | 2 (3) (OR canceled 50%;) | 20 (5) (OR canceled; 95%) | 1 (3) | -- |
| # Biospecimens Collected | ||||
| Blood | 63 (100) | 432 (100) | 36 (100) | 95 (100) |
| Urine | 63 (100) | 431 (100) | 36 (100) | 95 (100) |
| Fat | 34 (54) | 311 (72) | -- | -- |
| Peritoneal fluid | 39 (62) | 341 (79) | -- | -- |
| Endometrial implant | 13 (21) | 126 (29) | -- | -- |
| Endometrial biopsy | 47 (75) | 387 (90) | -- | -- |
| Health alerts: | ||||
| No | 59 (94) | 402 (93) | 31 (86) | 76 (80) |
| Yes; specify (not mutually exclusive): | 4 (6) | 30 (7) | 5 (14) | 19 (20) |
| Blood metal concentrations | -- | -- | -- | -- |
| MRI based disease; specify Endometriosis | 1 (10) | 7 (8) | 3 (9) | 11 (12) |
| Ovarian cysts | -- | 3 (3) | 1 (3) | 5 (5) |
| Screen positive severe depression | 1 (2) | 3 (<0) | -- | -- |
| Screen positive suicidal ideation | 4 (6) | 20 (5) | 1 (3) | 4 (4) |
NOTE: Women were recruited between July 2007 and June 2009. One included woman from the Utah operative cohort provided all data and biospecimens, but did not complete the baseline questionnaire. Key reasons why women were ineligible, not enrolled or withdrew from the study are listed in parentheses below the relevant cell count and percentage.