Association between low vitamin D and colorectal cancer among African Americans
SPP Description:
• Background (one page maximum)
o Statistics and information about the health outcome/disease(s)
o Statistics and information about the exposure/risk factor(s)
o Brief discussion of possible connection between exposure(s) and outcome(s) and justification for the study
• Target population and sample size
o Description of target population and sample
Inclusion and exclusion criteria
The sampling strategy to be used
o Sample size considerations (how large of a sample do you need and why)
• Recruitment (primary data collection) or data selection (secondary data) strategies
o If collecting your own data, describe:
How you will find and contact potential participants (where, when, with what method)
The type of data collection method to be used (e.g., online survey)
How many times participants will be contacted and by what method
o If using secondary data (an existing database), describe:
The procedures used for recruitment, participation, and data collection by the owners of the database (i.e., how were the data in the database collected?)
How you will gain access to the dataset
• Selection biases
o Description of potential selection bias concerns (i.e., how representative your sample will be of the larger population)
o Discussion of strategies you will use to minimize selection bias in your study


Leave a Reply
Want to join the discussion?Feel free to contribute!