A study of the association of breast cancer with duration of oral contraceptive (OC) use compared a group of women with breast cancer with a group of women of similar ages who were admitted to the same hospital for non-cancer diseases. From interviewing the subjects it could be determined who had used OC in the past and for how long. The following data were gathered:
Calculate the appropriate measure of association for this case control study and the 95% CI for each level of OC duration, using never users as the common reference group.
Please show all calculations.
8. For 4 years: Results of appropriate measure of association 11. If you disregard the duration of OC use, and lump together all the OC users, what would your results be? 95% CI 95% CI 95%
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A study of the association of breast cancer with duration of oral contraceptive (OC) use compared...
You are given results on a case control study on alcoholism and breast cancer, 200m participants with Breast cancer and 200 participants without cancer were selected and questioned on previous alcohol...
You are given results on a case control study on alcoholism and breast cancer, 200m participants with Breast cancer and 200 participants without cancer were selected and questioned on previous alcohol use. Breast Cancer (+) Breast Cancer (-) Total Heavy alcohol use 40 20 60 No/low alcohol use 160 180 340 total 200 200 400 Calculate and interpret the appropriate measure of association for this study? You later learn that 15 of the controls [Breast CANCER (-)] did not remember...
You are given results on a case control study on alcoholism and breast cancer, 200m participants...
You are given results on a case control study on alcoholism and breast cancer, 200m participants with Breast cancer and 200 participants without cancer were selected and questioned on previous alcohol use. Breast Cancer (+) Breast Cancer (-) Total Heavy alcohol use 40 20 60 No/low alcohol use 160 180 340 total 200 200 400 Calculate and interpret the appropriate measure of association for this study? You later learn that 15 of the controls [Breast CANCER (-)] did not remember...
A study looking at breast cancer in women compared cases with non-cases, and found that 75/100...
A study looking at breast cancer in women compared cases with non-cases, and found that 75/100 cases did not use calcium supplements compared with 25/100 of the non-cases. (+3) RR (+) Control Risk factor/exposure Disease Group Case No calcium supplement 75 Calcium supplement 25 25 75 What does the risk ratio say about the relationship between the use of calcium supplement use and the incidence of breast cancer? there is a negative association between not using Ca supplement and breast...
A researcher is interested in the relationship between oral contraceptive (OC) use and blood pressure in...
A researcher is interested in the relationship between oral
contraceptive (OC) use and blood pressure in women. Suppose a
sample of ten 35-to 39 year old nonpregnant, premenopausal OC users
who work in a company and have a mean systolic blood pressure (SBP)
of 132.86 mm Hg and sample standard deviation of 15.34 mm Hg are
identified. A sample of 21 nonpregnant, premenopausal, non-OC users
in the same age group are similarly identified who have mean SBP of
127. 44...
A researcher is interested in the relationship between oral contraceptive (OC) use and blood pressure in...
A researcher is interested in the relationship between oral contraceptive (OC) use and blood pressure in women. Suppose a sample of ten 35-to 39 year old nonpregnant, premenopausal OC users who work in a company and have a mean systolic blood pressure (SBP) of 132.86 mm Hg and sample standard deviation of 15.34 mm Hg are identified. A sample of 21 nonpregnant, premenopausal, non-OC users in the same age group are similarly identified who have mean SBP of 127. 44...
A researcher is interested in the relationship between oral contraceptive (OC) use and blood pressure in...
A researcher is interested in the relationship between oral contraceptive (OC) use and blood pressure in women. Suppose a sample of ten 35-to 39 year old nonpregnant, premenopausal OC users who work in a company and have a mean systolic blood pressure (SBP) of 132.86 mm Hg and sample standard deviation of 15.34 mm Hg are identified. A sample of 21 nonpregnant, premenopausal, non-OC users in the same age group are similarly identified who have mean SBP of 127. 44...
A researcher is interested in the relationship between oral contraceptive (OC) use and blood pressure in...
A researcher is interested in the relationship between oral contraceptive (OC) use and blood pressure in women. Suppose a sample of ten 35-to 39 year old nonpregnant, premenopausal OC users who work in a company and have a mean systolic blood pressure (SBP) of 132.86 mm Hg and sample standard deviation of 15.34 mm Hg are identified. A sample of 21 nonpregnant, premenopausal, non-OC users in the same age group are similarly identified who have mean SBP of 127. 44...
A researcher is interested in the relationship between oral contraceptive (OC) use and blood pressure in...
A researcher is interested in the relationship between oral contraceptive (OC) use and blood pressure in women. Suppose a sample of ten 35-to 39 year old nonpregnant, premenopausal OC users who work in a company and have a mean systolic blood pressure (SBP) of 132.86 mm Hg and sample standard deviation of 15.34 mm Hg are identified. A sample of 21 nonpregnant, premenopausal, non-OC users in the same age group are similarly identified who have mean SBP of 127. 44...
Exercise 9: A researcher is interested in the relationship between oral contraceptive (OC) use and blood...
Exercise 9: A researcher is interested in the relationship between oral contraceptive (OC) use and blood pressure in women. Suppose a sample of ten 35-to 39 year old nonpregnant, premenopausal OC users who work in a company and have a mean systolic blood pressure (SBP) of 132.86 mm Hg and sample standard deviation of 15.34 mm Hg are identified. A sample of 21 nonpregnant, premenopausal, non-OC users in the same age group are similarly identified who have mean SBP of...
BACKGROUND & METHODS The relationship between stress and breast cancer has been examined in many epidemiological...
BACKGROUND & METHODS
The relationship between stress and breast cancer has been
examined in many epidemiological studies, the results of which have
yielded mixed results. One reason for these differences is the use
of different measures of stress. For example, death of a spouse or
close relative is a major acute stressor, whereas stress
experienced in daily life is more moderate and chronic in nature.
As these different types of stress likely have different
physiological and psychological impacts, the observed...
A study looking at breast cancer in women compared cases with non-cases, and found that 75/100 cases did not use calcium supplements compared with 25/100 of the non-cases. (+3) RR (+) Control Risk factor/exposure Disease Group Case No calcium supplement 75 Calcium supplement 25 25 75 What does the risk ratio say about the relationship between the use of calcium supplement use and the incidence of breast cancer? there is a negative association between not using Ca supplement and breast...
A researcher is interested in the relationship between oral
contraceptive (OC) use and blood pressure in women. Suppose a
sample of ten 35-to 39 year old nonpregnant, premenopausal OC users
who work in a company and have a mean systolic blood pressure (SBP)
of 132.86 mm Hg and sample standard deviation of 15.34 mm Hg are
identified. A sample of 21 nonpregnant, premenopausal, non-OC users
in the same age group are similarly identified who have mean SBP of
127. 44...
A researcher is interested in the relationship between oral contraceptive (OC) use and blood pressure in women. Suppose a sample of ten 35-to 39 year old nonpregnant, premenopausal OC users who work in a company and have a mean systolic blood pressure (SBP) of 132.86 mm Hg and sample standard deviation of 15.34 mm Hg are identified. A sample of 21 nonpregnant, premenopausal, non-OC users in the same age group are similarly identified who have mean SBP of 127. 44...
Exercise 9: A researcher is interested in the relationship between oral contraceptive (OC) use and blood pressure in women. Suppose a sample of ten 35-to 39 year old nonpregnant, premenopausal OC users who work in a company and have a mean systolic blood pressure (SBP) of 132.86 mm Hg and sample standard deviation of 15.34 mm Hg are identified. A sample of 21 nonpregnant, premenopausal, non-OC users in the same age group are similarly identified who have mean SBP of...
BACKGROUND & METHODS
The relationship between stress and breast cancer has been
examined in many epidemiological studies, the results of which have
yielded mixed results. One reason for these differences is the use
of different measures of stress. For example, death of a spouse or
close relative is a major acute stressor, whereas stress
experienced in daily life is more moderate and chronic in nature.
As these different types of stress likely have different
physiological and psychological impacts, the observed...
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