Contraception (Birth Control) and Family Planning PubHealthInfo

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PubHealth.info® (a subsidiary of PakMed) presents scientific information mainly based on abstracts of articles published on a variety of public health issues/topics, particularly encompassing population planning, disease prevention, maternal and child health, and communicable and non-communicable diseases (like HIV AIDS, malaria, etc) that are affecting a significant portion of population in developing and developed countries. Here you can find abstracts of articles published on a variety of public health topics under category "Contraception (Birth Control) and Family Planning". Contraception (birth control) is a regimen of one or more actions, devices, or medications followed in order to deliberately prevent or reduce the likelihood of a woman becoming pregnant or giving birth. Therefore contraception is the utilization of various and sundry surgical procedures, devices, practices, agents, or drugs with the intention of preventing conception or impregnation (pregnancy). Methods and intentions typically termed birth control may be considered a pivotal ingredient to family planning. Birth control is a controversial political and ethical issue in many cultures and religions, and although it is generally less controversial than abortion specifically.

YEAR: 1997

CATEGORY: Contraception (Birth Control) and Family Planning

TITLE

A prospective study of reproductive factors, oral contraceptive use, and

risk of colorectal cancer.

AUTHORS

Martinez ME; Grodstein F; Giovannucci E; Colditz GA; Speizer FE; Hennekens

C; Rosner B; Willett WC; Stampfer MJ

SOURCE

CANCER EPIDEMIOLOGY, BIOMARKERS AND PREVENTION. 1997 Jan;6(1):1-5.

ABSTRACT

To explore the roles of reproductive factors and oral contraceptive use in the etiology of colorectal cancer, the

authors examined incident cases of colorectal cancer (n = 501) that occurred during 1,012,280 person-years of

follow-up between 1980 and 1992 in the Nurses' Health Study. The women completed mailed, self-administered

questionnaires every 2 years to update information on the risk factors and major medical events. In multivariate

analysis, the relative risk (RR) of colorectal cancer among women who experienced menarche at age 14 or older was

0.83 (95% confidence interval (CI) = 0.64-1.08) compared with women who had menarche at age 13; women whose

menarche occurred under age 12 were at higher risk (RR = 1.22; 95% CI = 0.96-1.55; P for trend = 0.01). Compared

with women whose first pregnancy was before age 24, the risk for colorectal cancer was significantly increased

among women whose first pregnancy was at age 30 or older (RR = 1.57; 95% CI = 1.15-2.14; P for trend = 0.02). No

important associations were seen for parity or age at menopause. Women who used oral contraceptives for 96

months or longer had a 40% lower risk of developing colorectal cancer (RR = 0.60; 95% CI = 0.40-0.89; P for trend =

0.02) compared with women who never used oral contraceptives. These prospective data suggest that a later age of

menarche and use of oral contraceptives may reduce risk of colorectal cancer, whereas women with a later age at

first pregnancy may have a higher risk. (PubHealth.info Document ID: CONT2T 1014-06)

PubHealth.info NOTE: The author(s) of this article titled, "A prospective study of reproductive factors, oral

contraceptive use, and risk of colorectal cancer.", is(are) Martinez ME; Grodstein F; Giovannucci E; Colditz GA;

Speizer FE; Hennekens C; Rosner B; Willett WC; Stampfer MJ. The source of this article is "CANCER

EPIDEMIOLOGY, BIOMARKERS AND PREVENTION. 1997 Jan;6(1):1-5.". This article was published in 1997 in

English language(s). (PubHealth.info® Document ID: CONT2T 1014-06. All rights reserved with PubHealth.info) PIN:

6014

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