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Table 1 Details of participants included in the pilot phase

From: Preventing recurrence of endometriosis by means of long-acting progestogen therapy (PRE-EMPT): report of an internal pilot, multi-arm, randomised controlled trial incorporating flexible entry design and adaption of design based on feasibility of recruitment

   n = 77
Age, years Mean (SD) 31 (7.5)
Age <35 years, n (%) Yes 53 (69)
Missing 0
BMI, kg/m2 Mean (SD) 27 (5.7)
Missing 17
Ethnic group, n (%) White British 64 (86)
Black/Black British Caribbean 2 (3)
Asian/Asian British Indian 3 (4)
Asian/Asian British Pakistani 1 (1)
Mixed White/Black Caribbean 2 (3)
Mixed White/Asian 1 (1)
Other mixed background 1 (1)
Missing 3
Stage of endometriosis, n (%) I 36 (47)
II 20 (26)
III 11 (14)
IV 10 (13)
Missing 0
Ever smoked? n (%) Yes 34 (48)
Missing 6
Extent of excision as judged by surgeon, n (%) Complete 71 (92)
Missing 0
EHP-30 pain score Mean (SD) 58 (18.5)
Missing 2
  1. BMI Body Mass Index, EHP Endometriosis Health Profile, SD standard deviation
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