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Table 4 Internal consistency of the 63-item EIQ and its dimensions

From: The Endometriosis Impact Questionnaire (EIQ): a tool to measure the long-term impact of endometriosis on different aspects of women’s lives

 

Numbera

last 12 months

1 to 5 years ago

more than 5 years ago"

Total three recall periods

EIQ total

423

.97 (63 items)

.97

.97

.98(189 items)

Physical-psychosocial

423

.97 (33 items)

.96

.95

.98 (99 items)

Physical

423

.92 (13 items)

.90

.90

.94 (39 items)

psychological

423

.95 (16 items)

.93

.92

.96 (48 items)

Social

423

.91 (4 items)

.90

.88

.93 (12 items)

Sexual

397

.84 (7 items)

.85

.86

.93 (21 items)

Fertility

415

.73 (3 items)

.73

.66

.85 (9 items)

Employment

397

.94 (11 items)

.94

.94

.97 (33 items)

Educational

271

.93 (6 items)

.92

.91

.93 (18 items)

Lifestyle

415

.53 (3 items)

.57

.62

.84 (9items)

  1. Cronbach’s alpha was evaluated
  2. aOnly responders who skipped all items of the dimension (all three recall periods) were omitted