| smell {slgf} | R Documentation |
Smell data on olfactory function by age group
Description
O'Brien and Heft (1995) studied the University of Pennsylvania Smell Identification Test (UPSIT). 180 subjects of different age groups were asked to describe 40 different odors. Olfactory index was quantified by the Freeman-Tukey modified arcsine transformation on the proportion of correctly identified odors. Subjects were divided into five age groups: group 1 if age 2 or younger; group 2 if between ages 26 and 40; group 3 if between ages 41 and 55; group 4 if between ages 56 and 70; and group 5 if older than 75.
Usage
data(smell)
Format
A data frame with 180 rows and 2 variables:
- agecat
age category, from 1 to 5.
- olf
olfactory function, measured as the Freeman-Tukey modified arcsine transformation on the proportion of correctly identified odors.
Source
References
OBrien RG, Heft MW (1995). “New Discrimination Indexes and Models for Studying Sensory Functioning in Aging.” Journal of Applied Statistics, 22, 9-27.