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. Author manuscript; available in PMC: 2017 Dec 21.
Published in final edited form as: Cancer Causes Control. 2016 Oct 11;27(11):1403–1409. doi: 10.1007/s10552-016-0813-7

Table 1.

Characteristics of women diagnosed with endometrial cancer in the NIH-AARP study population by BMI (kg/m2; n = 580)

Body mass index (BMI) 18.5 ≤ 25 25 ≤ 30 30 ≤ 35 35+ p value
Deaths/n 21/172 26/160 21/133 23/115 0.358
Age at diagnosis, years (mean, SD) 67.3 (0.4) 67.4 (0.5) 67.2 (0.5) 64.4 (0.5) <0.001
Pre-diagnosis BMI, kg/m2(mean, SD) 22.8 (2.8) 27.2 (3.4) 32.5 (4.0) 39.9 (6.5) <0.001

n % n % n % n %

Tumor summary stage 0.245
  Localized 105 61.1 96 60.0 91 68.4 61 53.0
  Regional/distant 17 9.9 14 8.8 6 4.5 11 9.6
  Unknown 50 29.1 50 31.3 36 27.1 43 37.4
Tumor grade at diagnosis 0.105
  Well differentiated 84 51.5 69 45.1 67 54.9 68 61.3
  Moderately differentiated 59 36.2 56 36.6 43 32.3 37 33.3
  Poorly differentiated 18 11.0 24 15.7 11 9.0 4 3.6
First course of treatment
Surgery 0.006
  Yes 160 93.0 142 88.8 115 86.5 91 79.1
  No 12 7.0 18 11.3 18 13.5 24 20.9
Radiation 0.191
  Yes 25 14.5 32 20.0 18 13.5 13 11.3
  No 116 67.4 104 65.0 87 65.4 72 62.6
  Missing 31 18.0 24 15.0 28 21.1 30 26.1
Chemo 0.077
  Yes 7 4.1 6 3.8 3 2.3 1 0.9
  No 151 87.8 144 90.0 117 88.0 95 82.6
  Missing 14 8.1 10 6.3 13 9.8 19 16.5
Education 0.401
  <High school/high school graduate 43 25.0 39 24.4 43 32.3 28 24.4
  Post-high school/some college 53 30.8 55 34.4 46 34.6 42 36.5
  College or graduate degree 73 42.4 61 38.1 39 29.3 44 38.3
Race/ethnicity 0.299
  Non-Hispanic White 165 95.9 157 98.1 126 94.7 107 93.0
  Other 6 3.5 1 0.6 5 3.8 7 6.1
Self-reported diabetes <0.001
  No 170 98.8 151 94.4 114 85.7 97 84.4
  Yes 2 1.2 9 5.6 19 14.3 18 15.7
Age at menarche 0.011
  ≤12 years old 76 44.2 83 51.9 69 51.9 74 64.4
  13+ years old 96 55.8 77 48.1 64 48.1 41 36.7
Parity 0.077
  Nulliparous 36 20.9 31 19.4 35 26.3 38 33.0
  1–2 68 39.5 64 40.0 43 32.3 31 27.0
  3–4 56 32.6 51 31.9 44 33.1 37 32.3
  5+ 9 5.2 14 8.8 11 8.3 9 7.8
Age at menopause 0.252
  Pre-menopausal 20 11.6 19 11.9 5 3.8 11 9.6
  <49 45 26.2 42 26.3 46 34.6 34 29.6
  50 ≤ 54 73 42.4 77 48.1 59 44.4 56 48.7
  55+ 33 19.2 22 13.8 23 17.3 14 12.2
OC use 0.203
  Never 110 64.0 102 63.8 101 75.9 78 67.8
  Ever 61 35.5 58 36.3 32 24.1 37 32.2
Hormone use at baseline <0.001
  Never 56 32.6 76 47.5 100 75.2 93 80.9
  Ever 116 67.4 84 52.5 33 24.8 22 19.1
Smoke 0.707
  Never 84 48.8 80 50.0 80 60.2 64 55.7
  Former 68 39.5 63 39.4 44 33.1 42 36.5
  Current 16 9.3 13 8.1 7 5.3 6 5.2
Health status <0.001
  Excellent/very good 105 61.1 63 39.4 42 34.4 23 21.7
  Good 44 25.6 76 47.5 63 51.6 51 48.1
  Fair/poor 13 7.6 18 11.3 17 12.3 32 27.8
Marital status 0.611
  Married or living as married 88 51.2 92 57.5 76 57.1 62 53.9
  Not married 82 47.7 68 42.5 56 42.1 53 46.1
MET h/week (mean, SD) 29.5 (2.7) 17.1 (1.5) 13.7 (1.5) 13.0 (1.9) <0.001
TV h/day (mean, SD) 2.9 (0.2) 3.3 (0.2) 4.3 (0.3) 4.5 (0.3) <0.001

Column percentages may not add up to 100 % due to rounding or missing data

p values were calculated using the Chi-squared test for categorical variables and the t test for continuous variables