Center for Survey
Statistics and Methodology

Example output


                        SIDE/IML Version 1.0

                           Copyright 1996

    Iowa State University Center for Survey Statistics & Methodology

                         All rights reserved


                        Author: Kevin W. Dodd


               *** Problem Identification Complete ***

Input data set is IN.OM89_91

Output library is OUT

                         Analysis Variables

                              CALORIES

                        Renamed Internally as

                              KCAL

              Class Variables used in Ratio-Adjustment

                              SEQ
                              WEEKDAY
                              MONTH
                              YEAR

                  ID Variables not used in analysis

                              ID

                          Weight Variables

                              WEIGHT

Number of observations/individual:            3

Correction for unequal within-individual variances reqested

                     *** Analyses requested ***

Simple statistics at each preliminary smoothing step

Estimation of Usual Intake Distribution

Transformation diagnostics requested

Cumulative Distribution Function computation requested

     Cutoff data values specified by user

                Cutoff values for variable: CALORIES

                                  2000

                  *** Transformation Parameters ***

Reciprocal of smallest initial power allowed:           10

Maximum number of join points allowed:           12

Fraction of observations in each linear end segment:            0

Fraction of variable mean used to adjust for zeroes:       0.0001

A-D Significance Level:         0.15

A-D Critical Point:        0.576

                      *** Output Data Sets ***

Data before and after each preliminary smoothing step

Data for normal probability plots of normality transformations

Percentile/Density Function data set

     Number of Percentile points generated:           41

Transformation parameter estimates

     Variable: KCAL  Calories                          Group:  1

                **** Preliminary Smoothing Step ****


                Shift to remove zero values : 0.18005

                Inverse of initial power    :       2

                Power of 10 used for scaling:       1


         * Ratio-Adjusting Shifted, Power-transformed Data *

                   Variable SEQ      has 3 levels.

                   Variable WEEKDAY  has 7 levels.

                  Variable MONTH    has 12 levels.

                   Variable YEAR     has 3 levels.

         Design matrix for ratio-adjustment has 22 columns.

            Sampling weights are used in the adjustment.

     * Homogenizing Shifted, Power-transformed, Adjusted Data *

        Estimated variance for each day BEFORE Homogenization

                           Day 01 0.65208
                           Day 02 0.68883
                           Day 03 0.73453

        Estimated variance for each day AFTER Homogenization

                           Day 01 0.65208
                           Day 02 0.65208
                           Day 03 0.65229


            * Descriptive Statistics for Smoothed Data *

                Original Ratio-Adjusted    Homogenized   Equal-Weight

N                   2661           2661           2661           2661
SumWeight              1              1              1           2661
Mean             1800.54        1829.45        1827.31        1827.24
Variance          520697         506130         475445         475360
Std. Dev.        721.594        711.428        689.525        689.464
Skewness         1.00223        0.83854        0.80032        0.79699
Kurtosis         2.20876         1.4267        1.28727        1.26887
Minimum                0        0.00248        0.00248        0.00143
Maximum          6026.08        5931.57        5931.57        5020.35

     Variable: KCAL  Calories                          Group:  1

          **** Percentile Values for Observed Intakes ****


                       Probability  Percentile

                              0.01     513.317
                             0.025       735.1
                              0.05     891.994
                             0.075     981.675
                               0.1     1047.96
                             0.125      1103.7
                              0.15     1154.29
                             0.175     1202.04
                               0.2     1247.72
                             0.225     1291.81
                              0.25     1334.69
                             0.275     1376.65
                               0.3      1417.9
                             0.325     1458.65
                              0.35     1499.06
                             0.375     1539.28
                               0.4     1579.43
                             0.425     1619.66
                              0.45     1660.06
                             0.475     1700.77
                               0.5      1741.9
                             0.525     1783.58
                              0.55     1825.99
                             0.575     1869.33
                               0.6     1913.82
                             0.625     1959.72
                              0.65      2007.3
                             0.675     2056.91
                               0.7     2108.98
                             0.725        2164
                              0.75     2222.64
                             0.775     2285.72
                               0.8     2354.39
                             0.825     2430.21
                              0.85     2515.49
                             0.875     2613.77
                               0.9     2730.92
                             0.925     2877.87
                              0.95     3079.04
                             0.975     3411.96
                              0.99     3839.61

              **** CDF Values for Observed Intakes ****


                       Value Prob. Below Prob. Above

                        2000     0.64623     0.35377
     Variable: KCAL  Calories                          Group:  1

         **** Variance Components for Transformed Data ****


                Number of Individuals             887
                Mean                          -0.0001
                Variance                      1.00102
                Variance of Usual Intakes     0.56295
                Variance of Measurement Error 0.43882
                Measurement Error d.f.           1772
                Scaled 4th Moment of M.E.     3.75232
                Variance of Ind. Variances    0.04829
                t for Heterogeneous Variance  3.34009
                # of Individuals with Ni > 1      887
                Variance of Mean              0.00113
                Variance of U.I. Variance     0.00116


           **** Diagnostics for Estimation Procedure ****


            * Normality Transformation Characteristics *

                                           Initial   Usual

          Inverse of Power used                  2       2
          Power of 10 used for Scaling           1       1
          Number of Parameters/Join Points       7       7

              * Normality Transformation Diagnostics *

                ADS Critical Value (5%)         0.787
                ADS Critical Value (15%)        0.576
                ADS for Observed Intakes      0.41618
                ADS for Day 01 Intakes        0.49491
                ADS for Day 02 Intakes        0.26648
                ADS for Day 03 Intakes        0.45898
                ADS for Mean Intakes          0.16508

     Variable: KCAL  Calories                          Group:  1

      * Regression of Indiv. Std. Deviations on Indiv. Means *

                       F test for linear model

                 F-Statistic   Num. d.f.      Pr > F

                      1.4864           1      0.2231

                   Error degrees of freedom : 885

                      Coefficient           t    Pr > |t|

            Intercept      0.5678     49.6511           0
            Linear        0.01656     1.21918      0.2231


              Covariance Matrix of Parameter Estimates

                              Intercept    Linear

                    Intercept   0.00013   1.65E-8
                    Linear      1.65E-8   0.00018

            **** Estimated Moments for Usual Intakes ****


                          Mean      1826.92
                          Variance   263970
                          Std. Dev.  513.78
                          Skewness  0.56885
                          Kurtosis   0.6214

     Variable: KCAL  Calories                          Group:  1

            **** Percentile Values for Usual Intakes ****

                 Probability  Percentile  Std. Error

                        0.01     824.894      43.198
                       0.025     959.964     38.6216
                        0.05     1075.13     33.2608
                       0.075     1151.82      30.179
                         0.1     1212.67     28.2354
                       0.125     1264.61     26.8942
                        0.15     1310.78     25.9255
                       0.175     1352.95     25.2124
                         0.2     1392.18     24.6807
                       0.225     1429.18     24.2094
                        0.25     1464.47     23.7756
                       0.275     1498.43     23.3842
                         0.3     1531.36     23.0395
                       0.325      1563.5     22.7457
                        0.35     1595.04     22.5064
                       0.375     1626.16     22.3256
                         0.4        1657     22.2069
                       0.425     1687.71     22.1538
                        0.45     1718.41     22.1699
                       0.475     1749.21     22.2582
                         0.5     1780.24      22.422
                       0.525     1811.61     22.6746
                        0.55     1843.46     23.0301
                       0.575     1875.93     23.4932
                         0.6     1909.18     24.0697
                       0.625     1943.39     24.7666
                        0.65     1978.76     25.5927
                       0.675     2015.52     26.5592
                         0.7     2053.98     27.6805
                       0.725     2094.49     28.9756
                        0.75     2137.49     30.4697
                       0.775     2183.56     32.1971
                         0.8     2233.47     34.2058
                       0.825     2288.26     36.5605
                        0.85     2349.47     39.3455
                       0.875     2419.44     42.7082
                         0.9     2502.05     46.9003
                       0.925     2604.48     52.3985
                        0.95     2742.67     60.2853
                       0.975     2966.52     73.8392
                        0.99     3246.75     90.7206

               **** CDF Values for Usual Intakes ****


                 Value Prob. Below Prob. Above  Std. Error

                  2000     0.66457     0.33543     0.01883
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