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Table 3 Risk factors or characteristics of endometriosis patients

From: Clinical diagnosis of pelvic endometriosis: a scoping review

Author(s) [Ref.] Year Study design Sample size Findings
Kashima et al. [38] 2004 Case–control 623 Familial tendency.
Hediger et al. [39] 2005 Cohort study 48 Taller, thinner and lower body mass index, late maturers (menarche at ≥14 y) and late to initiate sexual activity (≥21 y), less likely to be gravid, parous, and a current smoker.
Flores et al. [33] 2008 Cross-sectional 1285 Longer length of menses, earlier menarche and shorter cycle length.
Parazzini et al. [40] 2008 Case–control 672 More education, lower body mass index, never smoking and null parity.
Sinaii et al. [41] 2008 Cross-sectional 940 Pelvic pain, subfertility.
Yi et al. [1] 2009 Retrospective review of clinical records 481 Lower BMI.
Bazot et al. [42] 2009 Retrospective longitudinal study 92 Infertility, previous surgery for endometriosis, nulliparity, noncyclic chronic pelvic pain, dysmenorrhea, deep dyspareunia, painful defecation, dysuria and asthenia.
Treloar et al. [12] 2010 Case–control 268 Early menarche and early history of dysmenorrhea.
Lafay et al. [43] 2011 Case–control 476 Lower body mass index.
Chapron et al. [44] 2011 Cross-sectional 229 Positive family history, more absenteeism from school during menstruation, OC pill use for treating severe primary dysmenorrhea.
Nnoaham et al. [54] 2012 Systematic review and meta-analysis of case–control studies. 18 articles Early menarche
Peterson et al. [45] 2013 Cohort 626 Infertility history, dysmenorrhea and pelvic pain.
Parazzini et al. [55] 2013 Metaanalysis 15 articles Alcohol consumption
Borghese et al. [46] 2014 cross-sectional 663 Rhesus negativity
Xie et al. [48] 2014 prospective cohort study 88 623 Severe teenage acne.
Vercellini et al. [49] 2014 Case–control 771 Blue eye color
Tu et al. [50] 2014 Prospective cohort study 9,585 Prior OCP use in nulliparous women
Bungum et al. [56] 2014 Systematic review 5 articles Increased risk of allergic disorders (asthma, hay fever/allergic rhinitis of the sinus, eczema, food allergy, allergy to either pollen, dust, trees, paint, grasses, cigarette smoke, perfumes/fragrances, cleaning products, foods or environmental chemicals)
Bonocher et al. [57] 2014 Systematic review 6 articles Inconclusiveness regarding the benefits of physical exercise as a risk factor