The table below shows the characteristics of infants who were exclusively breastfed. Characteristic US National overall percentage Male Female Race/Ethnicity Hispanic Non-hispanic (white) Non-hispanic (black) Non-hispanic (Asian) Sample Size n 14,768 7.554 7,214 2.749 8,546 1.460 662 Exclusive Breastfeeding Exclusive Breastfeeding through 3 months (%) through 6 months (%) % half 95% CI % ± half 95% CI 43.3 +16 21.9+1.4 415121 45.2 +23 40.3±3.8 48.0 +1,9 33.4±4.1 46.5 +7.5 20.6 ± 1.8 23.3 +2.0 20.8 +3.3 24.4 1.7 13.9 +2.9 26.9 +7.1 a) Describe the results shown in the table [2] b) Suppose you wanted to conduct a study that would encapsulate the prevalence of breastfeeding in a community at a specific point in time, what study design would you pursue? [1] c) If you had pursued your answer in (b), give 3 other other variables aside from and Race would you consider? What kinds of variables are these? [6]

The table below shows the characteristics of infants who were exclusively breastfed. Characteristic US National overall percentage Male Female Race/Ethnicity Hispanic Non-hispanic (white) Non-hispanic (black) Non-hispanic (Asian) Sample Size n 14,768 7.554 7,214 2.749 8,546 1.460 662 Exclusive Breastfeeding Exclusive Breastfeeding through 3 months (%) through 6 months (%) % half 95% CI % ± half 95% CI 43.3 +16 21.9+1.4 415121 45.2 +23 40.3±3.8 48.0 +1,9 33.4±4.1 46.5 +7.5 20.6 ± 1.8 23.3 +2.0 20.8 +3.3 24.4 1.7 13.9 +2.9 26.9 +7.1 a) Describe the results shown in the table [2] b) Suppose you wanted to conduct a study that would encapsulate the prevalence of breastfeeding in a community at a specific point in time, what study design would you pursue? [1] c) If you had pursued your answer in (b), give 3 other other variables aside from and Race would you consider? What kinds of variables are these? [6]