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The RELIABILITY Procedure |
model time = temp voltage; model life*censor(1) = voltage width;
Variable1 | Variable2 | Type of Censoring |
nonmissing | nonmissing | uncensored if variable1 = variable2 |
nonmissing | nonmissing | interval censored if variable1 < variable2 |
nonmissing | missing | right censored at variable1 |
missing | nonmissing | left censored at variable2 |
OBS T1 T2 1 . 6 2 6 12 3 12 24 4 24 . 5 24 24then the statement
model (t1 t2);
Option | Option Description |
CONFIDENCE=number | specifies the confidence coefficient for all confidence intervals. Specify a number 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 |
INITIAL=number list | specifies initial values for regression parameters other than the location, or intercept term |
ITPRINT | requests iteration history for maximum likelihood fit |
LRCL | requests likelihood ratio confidence intervals for distribution parameters |
LOCATION=number < LINIT > | specifies fixed or initial value of the location, or intercept parameter |
MAXIT=number | specifies maximum number of iterations allowed for maximum likelihood fit |
OBSTATS | requests a table containing the XBETA, SURV, SRESID, and ADJRESID statistics in Table 30.22. The table also contains the dependent and independent variables in the model. |
OBSTATS(statistics) | requests a table containing the model variables and the statistics in the specified list of statistics. Available statistics are shown in Table 30.22. |
ORDER=DATA | FORMATTED | FREQ | INTERNAL | specifies sort order for values of the classification variables in the effect-list |
PSTABLE=number | specifies stable parameterization. The number must be between zero and one. See "Stable Parameters" for further information. |
READOUT | analyzes data in readout structure. The FREQ statement must be used to specify the number of units failing in each interval, and the NENTER statement must be used to specify the number of unfailed units entering each interval |
RELATION=ARRHENIUS | ARRHENIUS2 | POWER RELATION=(ARRHENIUS | ARRHENIUS2 | POWER < , > ARRHENIUS | ARRHENIUS2 | POWER ) | specifies type of relationship between independent and dependent variables. In the first form, the transformation specified is applied to the first continuous independent variable in the model. In the second form, the transformations specified within parentheses are applied to the first two continuous independent variables in the model, in the order listed. |
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 |
THRESHOLD=number | specifies a fixed threshold parameter. See Table 30.37 for the distributions with a threshold parameter. |
Option | Option Description |
CENSOR | is an indicator variable equal to 1 if an observation is censored, and 0 otherwise |
QUANTILES | QUANTILE | Q=number list | specifies distribution quantiles for each number in number list for each observation. The numbers must be between 0 and 1. Estimated quantile standard errors, and upper and lower confidence limits are also tabulated. |
XBETA | is the linear predictor |
SURVIVAL | SURV | is the fitted survival function, evaluated at the value of the dependent variable |
RESID | is the raw residual |
SRESID | is the standardized residual |
GRESID | is the modified Cox-Snell residual |
DRESID | is the deviance residual |
ADJRESID | is the adjusted standardized residuals. These are adjusted for right-censored observations by adding the median of the lifetime above the right-censored values to the residuals. |
RESIDADJ=number | specifies adjustment to be added to Cox-Snell residual for right-censored data values. The default is log(2) = 0.693. |
RESIDALPHA | RALPHA=number | specifies number ×100% percentile residual lifetime used to adjust right-censored standardized residuals. The number must be between 0 and 1. The default value is 0.5, corresponding to the median. |
CONTROL=variable | specifies a control variable in the input data set. If the value of the control variable is 1, the observation statistics are computed. If the value of the control variable is not equal to 1, the statistics are not computed for that observation. |
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