Wong: Post-Coma Recovery of IQ
In carData: Companion to Applied Regression Data Sets

Description Usage Format Details Source References Examples

The Wong data frame has 331 row and 7 columns. The observations are longitudinal data on recovery of IQ after comas of varying duration for 200 subjects.

Wong

This data frame contains the following columns:

id: patient ID number.
days: number of days post coma at which IQs were measured.
duration: duration of the coma in days.
sex: a factor with levels Female and Male.
age: in years at the time of injury.
piq: performance (i.e., mathematical) IQ.
viq: verbal IQ.

The data are from Wong, Monette, and Weiner (2001) and are for 200 patients who sustained traumatic brain injuries resulting in comas of varying duration. After awakening from their comas, patients were periodically administered a standard IQ test, but the average number of measurements per patient is small (331/200 = 1.7).

Wong, P. P., Monette, G., and Weiner, N. I. (2001) Mathematical models of cognitive recovery. Brain Injury, 15, 519–530.

Fox, J. (2016) Applied Regression Analysis and Generalized Linear Models, Third Edition. Sage.

1	summary(Wong)

       id            days            duration         sex           age        
 Min.   : 405   Min.   :   13.0   Min.   :  0.0   Female: 71   Min.   : 6.513  
 1st Qu.:3808   1st Qu.:   59.0   1st Qu.:  1.0   Male  :260   1st Qu.:21.737  
 Median :5085   Median :  150.0   Median :  7.0                Median :26.877  
 Mean   :4735   Mean   :  481.9   Mean   : 14.3                Mean   :31.853  
 3rd Qu.:5712   3rd Qu.:  416.0   3rd Qu.: 16.0                3rd Qu.:40.923  
 Max.   :7548   Max.   :11628.0   Max.   :255.0                Max.   :80.033  
      piq              viq        
 Min.   : 50.00   Min.   : 64.00  
 1st Qu.: 77.00   1st Qu.: 85.00  
 Median : 87.00   Median : 94.00  
 Mean   : 87.56   Mean   : 94.96  
 3rd Qu.: 97.00   3rd Qu.:105.00  
 Max.   :133.00   Max.   :132.00