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Table 1 Characteristics of the study included in the systematic review

From: Use of aromatase inhibitors to treat endometriosis-related pain symptoms: a systematic review

Authors

Year

Study design

Number of subjects

Age of the patients (years)

Diagnostic modality

Characteristics of endometriosis

Intervention: aromatase inhibitor

Intervention: other hormonal therapies

Intervention: non-hormonal therapies

Post-operative treatment

Length of treatment

Criteria for pain evaluation

Ailawadi et al. [38]

2004

Prospective non-comparative trial

10

29.9 (22-45)a

histology

ASRM stageb:

stage 1, n = 1

stage 2, n = 1

stage 3, n = 3

stage 4, n = 6

oral: letrozole 2.5 mg/day

oral: norethisterone acetate 2.5 mg/day

oral: elemental calcium 1250 mg/day, vitamin D 800 I.U./day

no

6 months

VAS

Soysal et al. [39]

2004

Randomised controlled trial

40

31.3 ± 5.7b

surgery

ASRM stageb:

stage 4, n = 40

oral: anastrozole 1 mg/day

subcutaneous: goserelin 3.6 mg/4 weeks

oral: elemental calcium 1200 mg/day, vitamin D 800 I.U./day

yes

6 months

TPSS

Amsterdam et al. [40]

2005

Prospective non-comparative trial

18

23-46c

surgery

NA

oral: anastrozole 1 mg/day

oral: ethinyl estradiol 20 μg/day, levonorgestrel 0.1 mg/day

none

no

6 months

VAS

Hefler et al. [41]

2005

Prospective non-comparative trial

10

31.2 ± 4.3b

histology

rectovaginal endometriosis

vaginal: anastrozole 0.25 mg/day

none

oral: elemental calcium 1200 mg/day, vitamin D 800 I.U./day

no

6 months

VAS

Remorgida et al. [42]

2007

Prospective non-comparative trial

12

32.8 ± 3.2b

surgery, US, MRI

ASRM stageb:

stage 4, n = 12

oral: letrozole 2.5 mg/day

oral: desogestrel 75 μg/day

oral: elemental calcium 1000 mg/day, vitamin D 880 I.U./day

no

6 months

VAS

Remorgida et al. [43]

2007

Prospective non-comparative trial

12

32.3 ± 3.8b

histology, US, MRI

rectovaginal endometriosis

oral: letrozole 2.5 mg/day

oral: norethisterone acetate 2.5 mg/day

oral: elemental calcium 1000 mg/day, vitamin D 880 I.U./day

no

6 months

VAS

Ferrero et al. [44]

2009

Prospective patient preference trial

41

31.2 ± 4.6b

histology, US

rectovaginal endometriosis

oral: letrozole 2.5 mg/day

oral: norethisterone acetate 2.5 mg/day

oral: elemental calcium 1000 mg/day, vitamin D 880 I.U./day

no

6 months

VAS

Roghaei et al. [45]

2010

Randomised controlled trial

38

32.3 ± 6.0b

surgery

NA

oral: letrozole 2.5 mg/day

none

oral: elemental calcium 1000 mg/day, vitamin D 880 I.U./day

yes

6 months

11-item scale

Alborzi et al. [46]

in press

Randomised controlled trial

47

29.2 ± 5.3b

histology

ASRM stageb:

stage 1-2, n = 24

stage 3-4, n = 23

oral: letrozole 2.5 mg/day

none

none

yes

2 months

VAS

Ferrero et al. [47]

in press

Randomised controlled trial

35

35.1 ± 3.8b

surgery, US

rectovaginal endometriosis

oral: letrozole 2.5 mg/day

oral

norethisterone acetate 2.5 mg/day (n = 17)

or

intramuscular triptorelin 11.25 mg/3 months (n = 18)

oral: elemental calcium 1000 mg/day, vitamin D 880 I.U./day

no

6 months

VAS and VRS

  1. a mean, range;b mean ± SD;c range
  2. US = ultrasonography; MRI = magnetic resonance imaging; ASRM = American Society for Reproductive Medicine stage of endometriosis [51]; VAS = visual analogue scale; TPSS = total pelvic symptom score; VRS = verbal rating scale; NA = not available