Mplus VERSION 6
MUTHEN & MUTHEN
04/25/2010  10:57 PM

INPUT INSTRUCTIONS

  ! SCRIPT NAME        : rawVC2b  (dp)
  ! GOAL                : To evaluate sex-differences in parameter estimates of variance com
  ! DATA                : continuous
  ! INPUT                : raw data
  ! UNI/BI/MULTI        : uni
  ! DATA-GROUPS        : MZM DZM MZF DZF
  ! MEANS MODEL        : grand mean, age effect, sex effect
  ! VARIANCE COVARIANCE MODEL(S)        : 1.ADE males + ADE females  2.ADE males = ADE femal

  data: file is example.dat;

  variable:

    names are country famid zygos sex1 age1 height1 weight1 bmi1
                                  sex2 age2 height2 weight2 bmi2;

    usevar are bmi1 sex1 age1 bmi2 sex2 age2;

    grouping=zygos(1=MZM 2=DZM 3=MZF 4=DZF); ! specify the groups

    missing=all(-1); ! specify missing data symbol

  analysis:  conv=1e-5;

  model :
    bmi1 on sex1 (b1)
            age1 (b2);
    bmi2 on sex2 (b1)
            age2 (b2);
    [bmi1 bmi2] (m);

  model MZM :
    bmi1 bmi2 (mv);
    bmi1 with bmi2 (mc1);

  model DZM :
    bmi1 bmi2 (mv);
    bmi1 with bmi2 (mc2);

  model MZF :
    bmi1 bmi2 (fv);
    bmi1 with bmi2 (fc1);

  model DZF :
    bmi1 bmi2 (fv);
    bmi1 with bmi2 (fc2);

  model constraint:

    new(ma md me mx mw mz);
    ma=mx*mx;
    md=mw*mw;
    me=mz*mz;
    mv=ma+md+me;
    mc1=ma+md;
    mc2=0.5*ma+0.25*md;

    new(fa fd fe fx fw fz);
    fa=fx*fx;
    fd=fw*fw;
    fe=fz*fz;
    fv=fa+fd+fe;
    fc1=fa+fd;
    fc2=0.5*fa+0.25*fd;

  ! Uncomment for Model ADE with A_male=A_female
  !  ma=fa;

  ! Uncomment for Model ADE with A_male=A_female and D_male=D_female
  !  ma=fa;
  !  md=fd;

  ! Uncomment for Model ADE with all components equal
  !  ma=fa;
  !  md=fd;
  !  me=fe;



*** WARNING
  Data set contains unknown or missing values for GROUPING,
  PATTERN, COHORT, CLUSTER and/or STRATIFICATION variables.
  Number of cases with unknown or missing values:  61
*** WARNING
  Data set contains cases with missing on all variables except
  x-variables.  These cases were not included in the analysis.
  Number of cases with missing on all variables except x-variables:  2
   2 WARNING(S) FOUND IN THE INPUT INSTRUCTIONS




SUMMARY OF ANALYSIS

Number of groups                                                 4
Number of observations
   Group MZM                                                    61
   Group DZM                                                    39
   Group MZF                                                    77
   Group DZF                                                    67

Number of dependent variables                                    2
Number of independent variables                                  4
Number of continuous latent variables                            0

Observed dependent variables

  Continuous
   BMI1        BMI2

Observed independent variables
   SEX1        AGE1        SEX2        AGE2

Variables with special functions

  Grouping variable     ZYGOS

Estimator                                                       ML
Information matrix                                        OBSERVED
Maximum number of iterations                                  1000
Convergence criterion                                    0.100D-04
Maximum number of steepest descent iterations                   20
Maximum number of iterations for H1                           2000
Convergence criterion for H1                             0.100D-03

Input data file(s)
  example.dat

Input data format  FREE


SUMMARY OF DATA

   Group MZM
     Number of missing data patterns             3

   Group DZM
     Number of missing data patterns             3

   Group MZF
     Number of missing data patterns             3

   Group DZF
     Number of missing data patterns             3


COVARIANCE COVERAGE OF DATA

Minimum covariance coverage value   0.100


     PROPORTION OF DATA PRESENT FOR MZM


           Covariance Coverage
              BMI1          BMI2          SEX1          AGE1          SEX2
              ________      ________      ________      ________      ________
 BMI1           0.902
 BMI2           0.852         0.951
 SEX1           0.902         0.951         1.000
 AGE1           0.902         0.951         1.000         1.000
 SEX2           0.902         0.951         1.000         1.000         1.000
 AGE2           0.902         0.951         1.000         1.000         1.000


           Covariance Coverage
              AGE2
              ________
 AGE2           1.000


     PROPORTION OF DATA PRESENT FOR DZM


           Covariance Coverage
              BMI1          BMI2          SEX1          AGE1          SEX2
              ________      ________      ________      ________      ________
 BMI1           0.897
 BMI2           0.744         0.846
 SEX1           0.897         0.846         1.000
 AGE1           0.897         0.846         1.000         1.000
 SEX2           0.897         0.846         1.000         1.000         1.000
 AGE2           0.897         0.846         1.000         1.000         1.000


           Covariance Coverage
              AGE2
              ________
 AGE2           1.000


     PROPORTION OF DATA PRESENT FOR MZF


           Covariance Coverage
              BMI1          BMI2          SEX1          AGE1          SEX2
              ________      ________      ________      ________      ________
 BMI1           0.961
 BMI2           0.922         0.961
 SEX1           0.961         0.961         1.000
 AGE1           0.961         0.961         1.000         1.000
 SEX2           0.961         0.961         1.000         1.000         1.000
 AGE2           0.961         0.961         1.000         1.000         1.000


           Covariance Coverage
              AGE2
              ________
 AGE2           1.000


     PROPORTION OF DATA PRESENT FOR DZF


           Covariance Coverage
              BMI1          BMI2          SEX1          AGE1          SEX2
              ________      ________      ________      ________      ________
 BMI1           0.970
 BMI2           0.940         0.970
 SEX1           0.970         0.970         1.000
 AGE1           0.970         0.970         1.000         1.000
 SEX2           0.970         0.970         1.000         1.000         1.000
 AGE2           0.970         0.970         1.000         1.000         1.000


           Covariance Coverage
              AGE2
              ________
 AGE2           1.000



THE MODEL ESTIMATION TERMINATED NORMALLY



TESTS OF MODEL FIT

Chi-Square Test of Model Fit

          Value                             32.682
          Degrees of Freedom                    43
          P-Value                           0.8735

Chi-Square Contributions From Each Group

          MZM                               13.985
          DZM                                5.350
          MZF                                3.696
          DZF                                9.652

Chi-Square Test of Model Fit for the Baseline Model

          Value                            224.905
          Degrees of Freedom                    36
          P-Value                           0.0000

CFI/TLI

          CFI                                1.000
          TLI                                1.046

Loglikelihood

          H0 Value                       -2947.212
          H1 Value                       -2930.871

Information Criteria

          Number of Free Parameters              9
          Akaike (AIC)                    5912.424
          Bayesian (BIC)                  5943.899
          Sample-Size Adjusted BIC        5915.370
            (n* = (n + 2) / 24)

RMSEA (Root Mean Square Error Of Approximation)

          Estimate                           0.000
          90 Percent C.I.                    0.000  0.045
          Probability RMSEA <= .05           0.959

SRMR (Standardized Root Mean Square Residual)

          Value                              0.218



MODEL RESULTS

                                                    Two-Tailed
                    Estimate       S.E.  Est./S.E.    P-Value

Group MZM

 BMI1     ON
    SEX1               0.975      0.408      2.390      0.017
    AGE1               0.095      0.016      6.045      0.000

 BMI2     ON
    SEX2               0.975      0.408      2.390      0.017
    AGE2               0.095      0.016      6.045      0.000

 BMI2     WITH
    BMI1               9.540      1.420      6.716      0.000

 Intercepts
    BMI1              20.152      0.661     30.504      0.000
    BMI2              20.152      0.661     30.504      0.000

 Residual Variances
    BMI1              11.427      1.389      8.230      0.000
    BMI2              11.427      1.389      8.230      0.000

Group DZM

 BMI1     ON
    SEX1               0.975      0.408      2.390      0.017
    AGE1               0.095      0.016      6.045      0.000

 BMI2     ON
    SEX2               0.975      0.408      2.390      0.017
    AGE2               0.095      0.016      6.045      0.000

 BMI2     WITH
    BMI1               2.422      1.793      1.351      0.177

 Intercepts
    BMI1              20.152      0.661     30.504      0.000
    BMI2              20.152      0.661     30.504      0.000

 Residual Variances
    BMI1              11.427      1.389      8.230      0.000
    BMI2              11.427      1.389      8.230      0.000

Group MZF

 BMI1     ON
    SEX1               0.975      0.408      2.390      0.017
    AGE1               0.095      0.016      6.045      0.000

 BMI2     ON
    SEX2               0.975      0.408      2.390      0.017
    AGE2               0.095      0.016      6.045      0.000

 BMI2     WITH
    BMI1               9.526      1.435      6.636      0.000

 Intercepts
    BMI1              20.152      0.661     30.504      0.000
    BMI2              20.152      0.661     30.504      0.000

 Residual Variances
    BMI1              13.941      1.316     10.591      0.000
    BMI2              13.941      1.316     10.591      0.000

Group DZF

 BMI1     ON
    SEX1               0.975      0.408      2.390      0.017
    AGE1               0.095      0.016      6.045      0.000

 BMI2     ON
    SEX2               0.975      0.408      2.390      0.017
    AGE2               0.095      0.016      6.045      0.000

 BMI2     WITH
    BMI1               3.772      1.597      2.362      0.018

 Intercepts
    BMI1              20.152      0.661     30.504      0.000
    BMI2              20.152      0.661     30.504      0.000

 Residual Variances
    BMI1              13.941      1.316     10.591      0.000
    BMI2              13.941      1.316     10.591      0.000

 New/Additional Parameters
    MA                 0.149      6.931      0.021      0.983
    MD                 9.391      6.976      1.346      0.178
    ME                 1.888      0.373      5.060      0.000
    MX                -0.386      8.988     -0.043      0.966
    MW                 3.064      1.138      2.692      0.007
    MZ                 1.374      0.136     10.120      0.000
    FA                 5.564      6.059      0.918      0.359
    FD                 3.962      6.062      0.654      0.513
    FE                 4.415      0.740      5.965      0.000
    FX                 2.359      1.284      1.836      0.066
    FW                -1.991      1.523     -1.307      0.191
    FZ                 2.101      0.176     11.930      0.000


QUALITY OF NUMERICAL RESULTS

     Condition Number for the Information Matrix              0.296E-06
       (ratio of smallest to largest eigenvalue)


     Beginning Time:  22:57:42
        Ending Time:  22:57:42
       Elapsed Time:  00:00:00



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