Patterns of missing data in the use of the endometriosis symptom diary

BMC Women's Health

Table 1 Demographic and clinical characteristics of the VALEPRO study population

Characteristic	Study population (n = 268)
Age, years, mean (range)	31.6 (19–45)
Race
Caucasian	241 (89.9)
Black	22 (8.2)
Other/missing	5 (1.9)
Country of recruitment
USA	133 (49.6)
Germany	135 (50.4)
Education level
Elementary education	16 (6.0)
Secondary education	111 (41.4)
College or university education	113 (42.2)
Missing	28 (10.4)
Number of births, mean (range)	0.60 (0–5)
Pelvic pain score at screening^a
No pain (0)	1 (0.4)
Mild (1–4)	67 (25.0)
Moderate (5–6)	77 (28.7)
Severe (7–10)	107 (39.9)
Missing	16 (6.0)

Data are presented as n (%) unless otherwise stated. Of the 272 participants, full data sets from 268 women were analysed in the VALEPRO study: four participants were excluded from the analysis population owing to insufficient information across a number of variables.
^aSelf-assessment of endometriosis-associated pain at its worst in the past 4 weeks (using 0–10 numeric rating scale, where 0 = no pain and 10 = pain as bad as you can imagine). VALEPRO Validation Study for Endometriosis Patient-Reported Outcome

ISSN: 1472-6874