Table 1

Distribution of established or suspected risk factors for endometrial cancer among 154 patients with endometrial cancer and 205 population controls

A.CharacteristicNo. of Cases/controlsaCases, mean (SD)Controls, mean (SD)P (t test)
Age (yr)154 /20564.6 (7.2)62.8 (7.4)0.02
Age at menarche (yr)154 /20513.3 (1.3)13.6 (1.3)0.03
Age at menopause (yr)134 /18151.4 (3.8)50.0 (4.0)0.002
Parity among parous (132 cases/179 controls)154 /2052.0 (1.3)2.1 (1.3)0.28
Age at first birth (yr)132 /17924.5 (4.2)24.4 (4.4)0.85
Age at last birth (yr)132 /17929.8 (5.6)30.3 (5.3)0.38
Breast-feedingb (months)132 /1798.1 (7.9)10.5 (10.3)0.03
Height (cm)154 /205163.9 (5.4)164.0 (5.0)0.89
BMI (kg/m2)154 /20528.4 (5.1)26.0 (4.2)0.0001
Fish consumption (portions per month)
All fish142 /2055.0 (2.6)5.2 (3.1)0.55
Fatty fishc142 /2043.2 (1.7)3.1 (1.1)0.32
B.ProportionsP2)
Premenopausal151 /2058.09.80.55
Nulliparous154 /20514.312.70.66
Ever used oral contraceptives154 /20516.927.80.02
Ever use of topic estriol, dienestrol, estradiol154 /20517.53.40.001
First-degree relative with endometrial cancer154 /2054.56.30.46
Ever smoked regularly154 /20526.033.20.14
Diabetes mellitus154 /20513.03.4<0.001
Hypertension154 /20534.419.00.001
  • a Number of cases and controls providing information.

  • b Mean duration of breast-feeding (months) for all women, including nulliparous: cases, 6.9 (SD, 7.9); controls 9.2 (10.3).

  • c Herring, Baltic herring, mackerel.