1          OPTIONS NONOTES NOSTIMER NOSOURCE NOSYNTAXCHECK;
 55         
 56         /* SleepTheHardWay.sas */
 57         title "Student's Sleep data with a classical mixed model";
 58         
 59         data bedtime;
 60              infile '/folders/myfolders/studentsleep.data.txt' firstobs=2;
 61                                                      /* Skip the header */
 62              input patient xsleep1 xsleep2;
 63              sleepdif = xsleep2-xsleep1;
 64         
 
 NOTE: The infile '/folders/myfolders/studentsleep.data.txt' is:
       Filename=/folders/myfolders/studentsleep.data.txt,
       Owner Name=root,Group Name=vboxsf,
       Access Permission=-rwxrwx---,
       Last Modified=05Jan2016:14:26:25,
       File Size (bytes)=544
 
 NOTE: 10 records were read from the infile '/folders/myfolders/studentsleep.data.txt'.
       The minimum record length was 47.
       The maximum record length was 47.
 NOTE: The data set WORK.BEDTIME has 10 observations and 4 variables.
 NOTE: DATA statement used (Total process time):
       real time           0.01 seconds
       cpu time            0.00 seconds
       
 65         proc print;
 
 66              title2 'Data in multivariate format';
 67         
 
 NOTE: There were 10 observations read from the data set WORK.BEDTIME.
 NOTE: PROCEDURE PRINT used (Total process time):
       real time           0.04 seconds
       cpu time            0.05 seconds
       
 68         proc means n mean stddev t probt;
 
 69              title2 'Matched t-test';
 70              var xsleep1 xsleep2 sleepdif;
 71         
 72         /* Make a data table in univariate format */
 73         
 
 NOTE: There were 10 observations read from the data set WORK.BEDTIME.
 NOTE: PROCEDURE MEANS used (Total process time):
       real time           0.04 seconds
       cpu time            0.03 seconds
       
 74         data unisleep;
 
 75              set bedtime;                      /* output writes a case */
 76              Subject=patient; Drug=1; ExtraSleep=xsleep1; output;
 77              Subject=patient; Drug=2; ExtraSleep=xsleep2; output;
 78              keep Subject Drug ExtraSleep;
 79         
 
 NOTE: There were 10 observations read from the data set WORK.BEDTIME.
 NOTE: The data set WORK.UNISLEEP has 20 observations and 3 variables.
 NOTE: DATA statement used (Total process time):
       real time           0.00 seconds
       cpu time            0.01 seconds
       
 80         proc print;
 
 81              title2 'Data in univariate format';
 82         
 
 NOTE: There were 20 observations read from the data set WORK.UNISLEEP.
 NOTE: PROCEDURE PRINT used (Total process time):
       real time           0.03 seconds
       cpu time            0.03 seconds
       
 83         proc glm plots=none;
 
 84              title2 'Repeated measures ANOVA: Compare t = 4.06, p = 0.0028';
 85              class Subject Drug;
 86              model ExtraSleep = Subject Drug;
 87              random Subject / test;
 88         
 89         /* So F = t-squared except for rounding error. */
 90         
 91         
 92         
 93         OPTIONS NONOTES NOSTIMER NOSOURCE NOSYNTAXCHECK;
 105