Data collection instruments were sent to the same sample of women at six different times during the first year of living with breast cancer. What type of study design does this exemplify?
a. Cross-sectional
b. Retrospective
c. Longitudinal
d. Correlational
ANS: C
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A Cross-sectional design is data collection at one point in time.
B In retrospective design, relationships are examined about past events to analyze possible effects on current variables.
C Longitudinal design involves data collection from the same group(s) at different points in time.
D Correlational design examines interrelationships among variables usually at one point in time.
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The USDA's Recommended Dietary Allowance (RDA) has been replaced by the:
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