Characteristics
Domains assessed:
Numeracy
Validation sample population age:
Adults: 18 to 64 years
Modes of administration in validation study:
Paper and pencil
Psychometrics
Number of items:
8
Sample size in validation study:
99
Language of validated version:
English
Main article reference
Schapria, M., Walker, C.M., Miller, T., Fletcher, K.A., Ganschow, P.G., Jacobs, E.A., Imbert, D., O'Connell, M., Neuner, J.M. (2014). Development and Validation of the Numeracy Understanding in Medicine Instrument Short Form, Journal of Health Communication, 19(2):240-253.
Corresponding author
Marilyn Schapira
Description
Shortened version of the NUMi incoporating an 8-item test
Year Measure first Published: 2014
About This Measure
Categorical scoring:
Yes
Scoring categories:
Low numeracy (0-3), Average numeracy (4-6), High numeracy (7-80
About the Validation of this Measure
Country where validated:
United States of America
Content validity:
Items from the original NUMi were sorted by their difficulty parameters and placed into 4 levels. Items with the highest level of discrimination in each difficulty level were chosen.
Reliability (Cronbach Alpha):
0.72
