A Study,conducted by Jackson Et Al

Multiple Choice

A study,conducted by Jackson et al.and published in the journal Cancer Causes and Control in 2009,examined 33,938 women aged 40 to 84 years old who resided in California and who reported having had a mammogram within the last 2 years.The researchers were interested in characteristics of women who routinely obtain mammograms,as suggested by the American Cancer Society,to detect breast cancer.The table below provides a column that refers to the sample size and provides characteristics of the 33,938 women who were included in the study who reported having had a mammogram. Are the results of the study likely biased toward one race/ethnicity group?

A) No,not as long as valid sampling process was used.
B) Yes,because most of the women in the study were white.
C) Yes,because the study included too many race/ethnicity groups.
D) None of the above