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. Author manuscript; available in PMC: 2013 Oct 10.
Published in final edited form as: Cancer Causes Control. 2012 Aug 5;23(10):1653–1663. doi: 10.1007/s10552-012-0043-6

Table 1.

Characteristics of study population, stratified by ethnicity and case-control status, 4-CBCS, 1999–2004 (n = 3,908)

Non-Hispanic white (n = 2,574)
Hispanic (n = 1,334)
p valueb
Case
Control
p valuea Case
Control
p valuea
No. Percentage No. Percentage No. Percentage No. Percentage
Total subjects 1,244 1,330 606 728
Center 0.08 0.33 <0.001
  Arizona 171 13.6 263 19.8 123 20.3 164 22.5
  Colorado 257 20.7 218 16.4 120 19.8 132 18.1
  New Mexico 494 39.7 496 37.3 263 43.4 251 34.5
  Utah 322 25.9 353 26.5 100 16.5 181 24.9
Education level 0.21 0.05 <0.001
  High school or less 310 24.9 353 26.5 348 57.4 390 53.6
  Some college 459 36.9 499 37.5 172 28.4 203 27.9
  Bachelor degree/higher 475 38.2 478 35.9 86 14.2 135 18.5
Parity <0.001 0.07 <0.001
  Nulliparous 210 16.9 188 14.1 57 9.4 70 9.6
  1–2 543 43.7 541 40.7 247 40.8 251 34.5
  3–1 400 32.2 458 34.4 217 35.8 285 39.2
  5+ 91 7.3 143 10.8 85 14.0 122 16.8
Menopausal status 0.07 0.20 <0.001
  Pre-/peri-menopausal 430 34.6 415 31.2 243 40.1 267 36.7
  Post-menopausal 814 65.4 915 68.8 363 59.9 461 63.3
Recent estrogen usec 0.04 0.23 0.1043
  Yes 992 79.7 1,016 76.4 468 77.2 542 74.5
  No 252 20.2 314 23.6 138 22.8 186 25.6
Family history, 1st degree <0.001 0.01 0.0045
  Yes 277 22.5 201 15.4 107 18.0 90 12.7
  No 952 77.5 1,106 84.6 486 82.0 617 87.3
Diabetes history 0.42 0.71 <0.001
  Yes 91 7.3 113 8.5 90 14.9 110 15.1
  Borderline 22 1.8 15 1.1 12 2.0 21 2.9
  No 1,130 91.0 1,200 90.4 504 83.2 596 82.0
Body mass index (kg/m 2)d 0.30 0.06 <0.001
  <25 578 46.5 601 45.4 198 32.7 204 28.1
  25–29.9 370 29.7 379 28.6 212 35.0 259 35.7
  30+ 296 23.8 345 26.0 196 32.3 263 36.2
Non-Hispanic white (n = 2,574)
Hispanic (n = 1,334)
p valuef
Case
Control
p valuee Case
Control
p valuee
Mean (sd) Mean (sd) Mean (sd) Mean (sd)
Age (years) 55.4 11.0 56.2 12.2 0.09 52.6 11.1 54.0 12.0 0.03 <0.001
Body mass index (kg/m2)c 26.8 6.0 27.0 6.2 0.62 28.1 6.0 29.0 6.2 0.01 <0.001
Total METs (minutes/week) 1,430 1,738 1,486 1,816 0.43 1,312 1,940 1,233 1,754 0.44 0.002
Calories (kilocalories) 2,180 1,032 2,101 984 0.05 2,737 1,414 2,684 1,439 0.50 <0.001

Percentages may not add up to 100 due to rounding

METs metabolic equivalent for task

a

Case–control comparison within ethnicity. Mantel–Haenszel χ2 p values from χ2 tests

b

Ethnic group comparison, regardless of case–control status. Mantel–Haenszel χ2 p values from χ2 tests

c

Recent hormone exposure, within 2 years of referent year (1 year prior to date of diagnosis for cases and 1 year prior to date of selection for controls)

d

Body mass index (BMI) calculated as kilograms (kg)/meters (m)2

e

Case–control comparison within ethnic group, p values from t tests

f

Ethnic group comparison, regardless of case–control status, p values from t tests