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Table 1 Demographic and clinical characteristics of study samples used to establish the content validity of the ESD and EIS

From: Development and content validation of two new patient-reported outcome measures for endometriosis: the Endometriosis Symptom Diary (ESD) and Endometriosis Impact Scale (EIS)

Demographic and clinical characteristicsConcept Elicitation (n = 45)Cognitive Debriefing (n = 31)
Age
 Mean (Range)33.9 (18–44)36.3 (21–45)
Country n (%)
 United States15 (33.3)19 (61.3)
 Germany15 (33.3)12 (38.7)
 France15 (33.3)N/A
Ethnic Background n (%)a
 Caucasian or White10 (66.7)8 (42.1)
 African American3 (20.0)9 (47.4)
 Other2 (13.3)2 (10.5)
Education Level n (%)
 High school diploma or GED4 (8.9)3 (9.7)
 Some years of college8 (17.8)5 (16.1)
 Certificate program7 (15.6)9 (29.0)
 College or University degree1 (2.2)10 (32.3)
 Graduate or professional degree25 (55.6)4 (12.9)
Experience of pain at screening n (%)b
 No pain (0)0 (0.0)1 (3.2)d
 Mild (1–4)16 (35.6)9 (29.0)d
 Moderate (5–6)14 (31.1)8 (25.8)
 Severe (7–10)15 (33.3)13 (41.9)
 Mean (range)5.8 (3–10)5.9 (0–10)
Current treatment n (%)c
 Painkillers22 (48.9)19 (61.3)
 Oral contraceptives13 (28.9)11 (35.5)
 Other hormonal contraceptives3 (6.7)5 (16.1)
 GnRH analogue4 (8.9)5 (16.1)
 Progestin3 (6.7)1 (3.2)
 Other3 (6.7)1 (3.2)
  1. aData not available for European sample; therefore, percentages calculated based on US sample only (concept elicitation: n = 15, cognitive debriefing: n = 19)
  2. bSelf-rated assessment of endometriosis-associated pain at its worst in the last 24 h (using a 0–10 NRS where 0 = no pain and 10 = pain as bad as you can imagine). Classifications of pain based on Serlin et al. (1995) [40]
  3. cCounts not mutually exclusive
  4. dOf note: Two patients from the US sample had NRS scores < 3
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