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The RELIABILITY Procedure 
Option  Option Description 
CONFIDENCE=number  specifies the confidence coefficient for all confidence intervals. The number must be between 0 and 1. The default value is 0.95 
CONVERGE=number  specifies the convergence criterion for maximum likelihood fit. 
CONVH=number  specifies the convergence criterion for the relative Hessian convergence criterion 
CORRB  requests parameter correlation matrix 
COVB  requests parameter covariance matrix 
FITTYPE  FIT=  specifies method of estimating distribution parameters 
LSYX  least squares fit to the probability plot. The probability axis is the dependent variable. 
 LSXY  least squares fit to the probability plot. The lifetime axis is the dependent variable. 
 MLE  maximum likelihood (default) 
 MODEL  use the fit from the preceding MODEL statement 
 NONE  no fit is computed 
 WEIBAYES <(CONFIDENCE  Weibayes method 
CONF=number)>  number is the confidence coefficient for the Weibayes fit and is between 0 and 1. The default value is 0.95. 
ITPRINT  requests iteration history for maximum likelihood fit 
LRCL  requests likelihood ratio confidence intervals for distribution parameters 
LRCLPER  requests likelihood ratio confidence intervals for distribution percentiles 
LOCATION=number < LINIT >  specifies fixed or initial value of location parameter 
MAXIT=number  specifies maximum number of iterations allowed for maximum likelihood fit 
MAXITEM=number1 <,number2>  number1 specifies maximum number of iterations allowed for Turnbull algorithm. Iteration history will be printed in increments of number2 if requested with ITPRINTEM. See "IntervalCensored Data" for details. 
NOPCTILES  suppresses computation of percentiles for standard list of percentage points 
NOPOLISH  suppress setting small interval probabilities to zero in Turnbull algorithm. See "IntervalCensored Data" for details. 
PCTLIST=numberlist  specifies list of percentages for which to compute percentile estimates. The numberlist must be a list of numbers separated by blanks or commas. Each number in the list must be between 0 and 100. 
PPOS=  specifies plotting position type. 
EXPRANK  expected ranks 
MEDRANK  median ranks 
MEDRANK1  median ranks (exact formula) 
KM  KaplanMeier 
MKM  modified KaplanMeier (default) 
PPOUT  request table of cumulative probabilities 
PROBLIST=numberlist  specifies list of initial values for Turnbull algorithm. See "IntervalCensored Data" for details. 
PSTABLE=number  specifies stable parameterization. The number must be between zero and one. See "Stable Parameters" for further information. 
READOUT  analyzes data with readout structure 
SCALE=number < SCINIT >  specifies fixed or initial value of scale parameter 
SHAPE=number < SHINIT >  specifies fixed or initial value of shape parameter 
SINGULAR=number  specifies singularity criterion for matrix inversion 
SURVTIME=numberlist  requests survival function for values in numberlist 
THRESHOLD=number  specifies a fixed threshold parameter. See Table 30.37 for the distributions with a threshold parameter. 
TOLLIKE=number  specifies criterion for convergence in the Turnbull algorithm. Default is 10^{8}. See "IntervalCensored Data" for details. 
TOLPROB=number  specifies criterion for setting interval probability to zero in the Turnbull algorithm. Default is 10^{6}. See "IntervalCensored Data" for details. 
Option  Option Description 
CENBIN  plots censored data as frequency counts rather than as individual points 
CENSYMBOL=  specifies symbols for censored values. 
symbol  (symbol list)  The symbol is one of the symbol names (plus, star, square, diamond, triangle, hash, paw, point, dot, circle) or a letter (A Z). For overlaid plots for groups of data, you can specify different symbols for the groups with a list of symbols or letters, separated by blanks, enclosed in parentheses. If no CENSYMBOL option is specified, the symbol used for censored values is the same as for failures. 
HOFFSET=value  specifies offset for horizontal axis 
INBORDER  requests a border around probability plots 
INTERTILE=value  specifies distance between tiles 
JITTER=number  specifies amount to jitter overlaying plot symbols, in units of symbol width 
LFIT=linetype  specifies a line style for fit line and confidence curves 
MISSING1  requests that missing values of first GROUP= variable be treated as a level of the variable 
MISSING2  requests that missing values of second GROUP= variable be treated as a level of the variable 
NCOLS=n  specifies number of columns plotted on a page 
NOCENPLOT  suppresses plotting of censored data points 
NOCONF  suppresses plotting of percentile confidence curves 
NOFIT  suppresses plotting of fit line and percentile confidence curves 
NOFRAME  suppresses frame around plotting area 
NOINSET  suppresses inset 
NOPPLEGEND  suppresses legend for overlaid probability plots 
NROWS=n  specifies number of rows plotted on a page 
ORDER1=DATA  FORMATTED  FREQ  INTERNAL  specifies display order for values of the first GROUP= variable 
ORDER2=DATA  FORMATTED  FREQ  INTERNAL  specifies display order for values of the second GROUP= variable 
OVERLAY  requests overlaid plots for group variables 
PCONFPLT  plots confidence intervals on probabilities for readout data 
PPLEGEND = legendstatementname  NONE  identifies LEGENDn statement to specify legend for overlaid probability plots 
ROTATE  requests probability plots with probability scale on horizontal axis 
TURNVLABELS  vertically strings out characters in labels for vertical axis 
VOFFSET=value  length of offset at upper end of vertical axis 
WFIT=linetype  line width for fit line and confidence curves 
Option  Option Description  
HREF < (INTERSECT) >=valuelist  requests reference lines perpendicular to horizontal axis. If (INTERSECT) is specified, a second reference line perpendicular to the vertical axis is drawn that intersects the fit line at the same point as the horizontal axis reference line. If a horizontal axis reference line label is specified, the intersecting vertical axis reference line is labeled with the vertical axis value.  
HREFLABELS=('label1' ... 'labeln')  specifies labels for HREF=lines.  
HREFLABPOS=n  specifies vertical position of labels for HREF=lines.
The valid values for n and the corresponding label placements are
shown below.
 
LHREF=linetype  specifies line style for HREF=lines  
LVREF=linetype  specifies line style for VREF= lines  
VREF < (INTERSECT) >=valuelist  specifies reference lines perpendicular to vertical axis. If (INTERSECT) is specified, a second reference line perpendicular to the horizontal axis is drawn that intersects the fit line at the same point as the vertical axis reference line. If a vertical axis reference line label is specified, the intersecting horizontal axis reference line is labeled with the horizontal axis value.  
VREFLABELS=('label1' ... 'labeln')  specifies labels for VREF= lines  
VREFLABPOS=n  specifies horizontal position of labels for VREF= lines.
The valid values for n and the corresponding label placements are
shown below.

Option  Option Description 
FONT=font  specifies a software font for text 
HEIGHT=value  specifies height of text used outside framed areas 
INFONT=font  specifies a software font for text inside framed areas 
INHEIGHT=value  specifies height of text inside framed areas 
Option  Option Description 
LAXIS=value1 to value2<by value3>  specifies tick mark values for the lifetime
axis. value1, value2, and value3 must be numeric, and value1 must be
less than value2.
The lower tick mark is value1. Tick marks are drawn at
increments of value3.
The last tick mark is the greatest value that does not exceed value2.
If value3 is omitted, a value of 1 is used.
This method of specification of tick marks is not valid for logarithmic
axes.
Examples of LAXIS= lists are
laxis = 1 to 10 laxis = 0 to 200 by 10 
LGRID=number  specifies a line style for all grid lines. The number is between 1 and 46 and specifies a linestyle for grids. 
LIFELOWER  LLOWER=number  specifies the lower limit on the lifetime axis scale. The LLOWER option specifies number as the lower lifetime axis tick mark. The tick interval and the upper lifetime axis limit are determined automatically. This option has no effect if the LAXIS option is used. 
LIFEUPPER  LUPPER=number  specifies the upper limit on the lifetime axis scale. The LUPPER option specifies number as the upper lifetime axis tick mark. The tick interval and the lower lifetime axis limit are determined automatically. This option has no effect if the LAXIS option is used. 
MPGRID  adds a minor grid for the probability axis 
MINORLOGGRID  adds a minor grid for log axes 
NOGRID  suppresses grid lines 
NOLLABEL  suppresses label for life, or analysis variable, axis 
NOLTICK  suppresses tick marks and tick mark labels for lifetime or analysis variable axis 
NOPLABEL  suppresses label for probability axis 
NOPTICK  suppresses tick marks and tick mark labels for the probability axis 
NTICK=number  specifies the number of tick intervals for the lifetime axis. This option has no effect if the LAXIS option is used. 
PCTLOWER  PLOWER=number  specifies the lower limit on probability axis scale 
PCTUPPER  PUPPER=number  specifies the upper limit on probability axis scale 
PAXISLABEL=`string'  specifies a label for the probability axis 
WAXIS=n  specifies the line thickness for axes and frame 
Table 30.28: Color and Pattern Options
Option  Option Description 
CAXIS=color  color for axis 
CCENSOR=color  color for filling censor plot area 
CENCOLOR=color  color for censor symbol 
CFIT=color  color for fit line and confidence curves 
CFRAME=color  color for frame 
CFRAMESIDE=color  color for filling frame for row labels 
CFRAMETOP=color  color for filling frame for column labels 
CGRID=color  color for grid lines 
CHREF=color  color for HREF=lines 
CTEXT=color  color for text 
CVREF=color  color for VREF= lines 
Option  Option Description 
DESCRIPTION=`string'  description for graphics catalog member 
NAME=`string'  name for plot in graphics catalog 
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