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Table 2 Characteristics of included studies

From: Food groups and nutrients consumption and risk of endometriosis: a systematic review and meta-analysis of observational studies

Author, Year

Location

Sample size

Age (Mean)

BMI (kg/m2)

Study Design

Type of diagnosis

Type of dietary assessment

Statistical adjustments

Reported exposure

Quality assessment

Missmer et al., 2010 [4]

US

116,607

35.64

25≤

Cohort

Laparoscopy

FFQ/130 Items

age at menarche, length of menstrual cycle, parity, BMI, energy intake

Total fat, MUFA, PUFA, SFA, TFA

High

Trabert et al., 2011 [2]

US

944

18–49

NM

Case–control

Laparoscopy

FFQ/122 items

Age and year of enrolment, energy intake, income, BMI, smoking and alcohol consumption

Dairy, total fat, MUFA, PUFA, SFA, TFA, fruits, vegetables, fish, poultry, red meat

High

Harris et al., 2013 [11]

US

70,556

35.91

25≤

Cohort

Laparoscopy

FFQ/130 Items

age, age at menarche, length of menstrual cycle, parity, BMI, energy intake

Dairy, high-fat dairy, low-fat dairy, cheese, milk

High

Yamamoto et al., 2018 [12]

US

116,429

36.23

25≤

Cohort

Laparoscopy

FFQ/130 Items

race, age at menarche, length of menstrual cycle between ages 18–22, parity, body mass index, energy intake, recent gynecologic exam

Egg, fish, poultry, red meat

High

Harris et al., 2018 [21]

US

70,835

36.08

NM

Cohort

Laparoscopy

FFQ/130 Items

age, age at menarche, length of menstrual cycle, parity, BMI, energy intake

Fruits, vegetables

High

Nodler et al., 2020 [8]

US

116,429

41.38

25.68

Cohort

Laparoscopy

FFQ/124 items

body mass index at age 18 years, age at menarche, adolescent physical activity, smoking in adolescence, adolescent hormonal contraceptive use, and energy intake.

Dairy, high-fat dairy, low-fat dairy, cheese, milk

High

Parazzini et al., 2004 [7]

Italy

1008

33

NM

Case-control

Laparoscopy

FFQ

age, calendar year at interview, education, parity, body mass index.

Cheese, milk, fruits, vegetables, egg, fish, red meat

High

Youseflu et al., 2020 [23]

Iran

156

30.18

NM

Case-control

Laparoscopy

FFQ/147 Items

Age, energy intake, BMI, income

Dairy, high-fat dairy, low-fat dairy, total fat, MUFA, PUFA, SFA, TFA, fruits, vegetables, egg, fish, poultry, red meat

High

  1. US United States, NM Not mentioned, FFQ Food Frequency Questionnaire, BMI Body Mass Index, MUFA Monounsaturated Fatty Acids, PUFA Polyunsaturated Fatty Acids, SFA Saturated Fatty Acids, TFA Trans Fatty Acid