\HeaderA{migraine}{Longitudinal Study on Migraine Severity}{migraine}
\keyword{datasets}{migraine}
\begin{Description}\relax
Data on migraine severity in 119 Canadian (Toronto) patients
\end{Description}
\begin{Usage}
\begin{verbatim}data(migraine)\end{verbatim}
\end{Usage}
\begin{Format}\relax
This data frame contains 16,366 rows and the following columns:

\strong{Responses}
\describe{
\item[HA] headache severity: \code{0} absence, \code{1} mild,
\code{2} moderate, \code{3} painful, \code{4} severe,
\code{5} intense
}
\strong{Personal covariates}
\describe{
\item[AGE] age of patient
\item[ED] educational level: \code{1} less than highschool, \code{2}
highschool, \code{3} trade or technical training, \code{4} community
college, \code{5} BA, \code{6} MA, \code{7} PhD
\item[EMPL] employment status: \code{1} full-time, \code{2}
part-time, \code{3} on disability, \code{4} unemployed, \code{5}
other
\item[MARITAL] marital status: \code{1} single, \code{2} married,
cohabitating, \code{3} separated, \code{4} divorced, \code{5}
widowed
\item[OCC] occupation: \code{1} professional/executive manager,
\code{2} skilled worker, \code{3} clerical worker, \code{4}
semi-skilled or un-skilled, \code{5} homemaker, \code{6} unemployed,
\code{7} student, \code{8} retired
\item[PERIOD] measurement period index: the numeric part correspond to \code{SUBJECT} while the following alphabetic part to the measurement period
\item[SEX] gender: \code{M}ale, \code{F}emale
\item[SMOKE] currently smokes cigarettes:
\code{Y}es, \code{N}o
\item[SUBJECT] patient index
\item[WEATHER] patient indication weather is a trigger for their
headache: \code{Y}es, \code{N}o
}
\strong{Clinical covariates}
\describe{
\item[COPHYS] comorbid physical illness(es): \code{Y}es, \code{N}o
\item[COPSYC] comorbid psychological condition(s): \code{Y}es, \code{N}o
\item[HATYPE] headache type: \code{1} migraine without aura, 
\code{2} migraine with aura, \code{3} mixed migraine/tension
headache
\item[MEDANALG] current analgesic medication intake for headache:
\code{Y}es, \code{N}o
\item[MEDNONHA] current medication taken for reason other than headache:
\code{Y}es, \code{N}o
\item[MEDOTHER] current other medication intake for headache :
\code{Y}es, \code{N}o
\item[MEDPROPH] current prophylactic medication intake for headache:
\code{Y}es, \code{N}o
\item[NEO] neuroticism domain T score
\item[YRSSUFF] years suffering from migraine
}
\strong{Calendar covariates}
\describe{
\item[DAY] day on which headache was recorded
\item[DATE] date on which headache was recorded
\item[INTRADAY] moment of the day on which headache was recorded: 
\code{AM}, \code{NOON}, \code{PM}, \code{BED}
\item[MONTH] month on which headache was recorded
\item[SEASEQ] season - by equinoxes and solstices: \code{SPR} Spring,
\code{SUM} Summer, \code{FALL} Fall, \code{WINT} Winter
\item[SEASMET] season - metheorologist's version by month: \code{SPR} Spring,
\code{SUM} Summer, \code{FALL} Fall, \code{WINT} Winter
\item[WDAY] day of the week  on which headache was recorded:
\code{MON} Monday, \code{TUES} Tuesday, \code{WED} Wednesday,
\code{THUR} Thursday, \code{FRI} Friday, \code{SAT} Saturday,
\code{SUN} Sunday
\item[YEAR] year on which headache was recorded
}
\strong{Weather covariates}
\describe{
\item[AHDXD] humidity index based on the change since the day before
\item[AQISTN] Air Quality Index Station (nine stations)
\item[AQMAX] maximum AQI; day of measurement
\item[AQMAX1P] maximum AQI; previous day
\item[AWCHILLD] windchilld index based on the change since the day before
\item[CA] cloud total amount (tenths); day of measurement
\item[CA1P] cloud total amount (tenths); previous day
\item[DHDX] the amount of humidity index above yesterday level
\item[MAXHD] humidity index  based on max. temp and humidity
per 24 hours; day of measurement
\item[MAXHD1P] humidity index  based on max. temp and humidity
per 24 hours; previous day
\item[MINWC] windchilld based on min. temp and windspeed per hour; day of measurement
\item[MINWC1P] windchilld based on min. temp and windspeed per hour; previous day
\item[PMN] pressure - mean sea level (.01 kilopascals); day of measurement
\item[PMN1P] pressure - mean sea level (.01 kilopascals); previous day
\item[PMND] pressure - mean sea level (.01 kilopascals); change from previous day
\item[PREC] precipitation total amount, snow and rain (.1mm); day of measurement
\item[PREC1P] precipitation total amount, snow and rain (.1mm); previous day
\item[RHMN] mean relative humidity (\%); day of measurement
\item[RHMN1P] mean relative humidity (\%); previous day
\item[S] sunshine total amount (hours); day of measurement
\item[S1P] sunshine total amount (hours); previous day
\item[THUN] thunderstorm total daily severity; day of
measurement: \code{0} no thunderstorm, \code{1} thunderstorm
\item[THUN1P] thunderstorm total daily severity; previous day: \code{0} no thunderstorm, \code{1} thunderstorm
\item[TMN] mean temperature (degree Celsius); day of measurement
\item[TMN1P] mean temperature (degree Celsius); previous day
\item[TMND] mean tempertature (degree Celsius); change from previous day
\item[WSMAX] maximum wind speed (km/hr); day of measurement
\item[WSMAX1P] maximum wind speed (km/hr;, previous day)
\item[WSTN] weather station (three weather)      
}
\end{Format}
\begin{Source}\relax
Dr. Tommy Kostecki-Dillon.
\end{Source}
\begin{References}\relax
Varin, C. and Czado, C. (2009). A mixed autoregressive probit model for
ordinal longitudinal data. \emph{Biostatistics}, to appear.
\end{References}
\begin{SeeAlso}\relax
\code{\LinkA{maop}{maop}}
\end{SeeAlso}

