analysis of the relation between parity and cause of death for 1.2 million women aged 45-74 years revealed that parous women had lower mortality from breast , ovarian , and endometrial cancer than did nulliparous women but a higher mortality from diabetes mellitus , gallbladder disease , cancer of the uterine cervix , nephritis and nephrosis , hypertension , ischaemic and degenerative heart disease , cerebrovascular disease , and all causes of death .
C0030563
parity
C0425979
nulliparous