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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: Nurs Res. 2016 Mar-Apr;65(2):151–166. doi: 10.1097/NNR.0000000000000146

TABLE 6.

Case Control Studies: Adiposity and Endometriosis Diagnosis Using Logistic Regression

Studya Year Adiposity measure OR 95% CI Trend AOR 95% CI Trend
Cramerb 1986 Weight (kg)
  ≤56 1 referent 1 referent
  56–63 1.4 NR 1.2 [0.8–1.6]
  ≥64 1.1 NR 0.8 [0.5, 1.1]
Hedigerc 2005 Perceived figure BMI 0.9 [0.8, 1.0] 0.9 [0.75,
0.99]
McCannd 1993 Waist/hip ratio
  < 30 years old .001 .006
    0.61–0.72 6.2 [2.0, 19.0] 6.2 [1.4, 26.7]
    0.72–0.76 1.4 [0.4, 4.4] 3.2 [0.6, 16.0]
    0.76–1.01 1 referent 1 referent
  ≥ 30 years old .20 .11
    0.61–0.72 1.3 [0.4, 4.3] 1.6 [0.4, 6.7]
    0.72–0.76 1.1 [0.3–3.8] 1.4 [0.3, 6.7]
    0.76–1.01 1 referent 1 referent
Waist/thigh ratio
  < 30 years old .08 .19
    1.03–1.22 3.6 [1.2, 10.8] 2.4 [0.6, 9.3]
    1.22–1.31 1.7 [0.6, 4.7] 2.7 [0.7, 9.9]
    1.31–1.75 1 referent 1 referent
  ≥ 30 years old .79 .76
    1.03–1.22 0.6 [0.2, 1.9] 0.6 [0.1, 2.2]
    1.22–1.31 1.2 [0.4, 3.7] 1.3 [0.4, 4.7]
    1.31–1.75 1 referent 1 referent
Naglee 2009 RW (age 10)
  Self-report
    Underweight NR NR 0.9 [0.5, 1.7]
    Average NR NR 1.0 referent
    Overweight NR NR 2.8 [1.1, 7.5]
  Mothers’ report
    Underweight NR NR 1.2 [0.5, 2.9]
    Average NR NR 1.0 referent
    Overweight NR NR 2.1 [0.4, 11.0]
RW (age 16)
  Self-report
    Underweight NR NR 1.4 [0.7, 2.7]
    Average NR NR 1 referent
    Overweight NR NR 0.5 [0.3, 1.0]
Mothers’ report
  Underweight NR NR 5.9 [1.6, 20.9]
  Average NR NR 1 referent
  Overweight NR NR 1.0 [0.3, 3.6]
Signorellof 1997 Weight/10 kg; FCs 0.9 NR 0.7
Weight/10 kg; IFCs 0.9 NR 0.8 [0.6, 1.2]

Note. Values were rounded to the nearest tenth. Trend lists the p-value for the trend in ORs or AORs. AOR = adjusted odds ratio; CI = confidence interval; FC = fertile control; IFC = infertile control; NR = not reported; OR = odds ratio; RW = relative weight.

a

First author last name.

b

Adjusted for: Center, age at interview, difference between age at menarche and index date, education, religion, menstrual pain, and cycle length.

c

Adjusted for: Age, being ≥ 68 inches tall, parity.

d

Adjusted for: Age, BMI, whether ever pregnant, age at menarche, intensity of menstrual flow, any change in symptoms over time.

e

Analyses for weight at age 10 adjusted for: Age at menarche; state of residence, relative weight at age 16 years. Analyses for weight at age 16 were adjusted for: Age at menarche; state of residence, relative weight at age 10 years.

f

Adjusted for: Age, highest educational level attained, regularity of menstrual cycle, exercise, height.