Question

Determine what type of study design was used. After each study design, write down a strength and limitation of the study design.

Objective: To better understand the mechanisms behind breastfeeding and childhood obesity, we assessed the association of weight gain with the mode of milk delivery aside from the type of milk given to infants. DESIGN: AX study of infants followed up from birth to age 1 year. Multilevel analyses were conducted to estimate infant weight gain by type of milk and feeding mode. SETTING Pregnant women were recruited from a consumer mail panel throughout the United States between May 2005 and June 2007. PARTICIPANTS: One thousand eight hundred ninety nine infants with at least 3 weight measurements reported during the first year. MAIN EXPOSURES: Six mutually exclusive feeding categories and proportions of milk feedings given as breastmilk or by bottle. MAIN OUTCOME MEASURES: Weight measurements reported on 3-, 5-, 7-, and 12-month surveys. 4. Type of Study: Strength Limitation:

Answer 1

In case study, the type of study indicate content or subject will explain about theme of study..

Strength will provide complete details and information about study and sample oforepresentstive of study population..

Limitation is a secondary data.it will indicate the impossible or difficult process with in the case study..

4,Type of study: mechanism behind breast feeding and childhood obesity.. multilevel analysis were conducted to estimate infant weight gain by type of milk and feeding mode.

Strength:. One thousand eight hundred and ninety nine infants with atleast three weight measurements reported during the first year.

Limitation:. Six manually exclusive feeding categories and proportions of milk feeding given as breast milk or by bottle..

5, Type of study: obesity and diabetes with environmental factors..study examines the association measures regarding built environment and local agriculture..

Strength:. Local food economy includes the density of farmers markets and the presence of farms with direct sales..

Limitation: growing environment associated with the prevalence of obesity and diabetes and a strong local food economy playing a important role in prevention..