Mplus model1e 模型讲解

来自图书《MPlus中介调节模型》

使用Mplus进行二元因变量调节效应分析

  • 理论模型
  • 数学模型
  • 数学推导 (含条件效应计算)
  • Mplus代码解读 (含可视化代码)

理论模型

数学模型

数学公式1

logit(Y) = b0 + b1X + b2W + b3XW

数学公式2

logit(Y) = b0 + b1X + b2W + b3XW
logit(Y) = (b0 + b2W) + (b1 + b3W)X

数学公式3

logit(Y) = b0 + b1X + b2W + b3XW
logit(Y) = (b0 + b2W) + (b1 + b3W)X
X对logit(Y)的直接效应(在给定W的情况下): b1 + b3W

数学公式4

logit(Y) = b0 + b1X + b2W + b3XW
logit(Y) = (b0 + b2W) + (b1 + b3W)X
X对logit(Y)的直接效应(在给定W的情况下): b1 + b3W
X对Y的优势比的乘法效应(在给定W的情况下): exp(b1 + b3W) = exp(b1)*exp(b3W)

代码解读1

USEVARIABLES = X W Y XW;

代码解读2

USEVARIABLES = X W Y XW;
CATEGORICAL = Y;

代码解读3

USEVARIABLES = X W Y XW;
CATEGORICAL = Y;
DEFINE:
XW = X*W;

代码解读4

USEVARIABLES = X W Y XW;
CATEGORICAL = Y;
DEFINE:
XW = X*W;
ANALYSIS:
TYPE = GENERAL;
ESTIMATOR = ML;

代码解读5

USEVARIABLES = X W Y XW;
CATEGORICAL = Y;
DEFINE:
XW = X*W;
ANALYSIS:
TYPE = GENERAL;
ESTIMATOR = ML;
MODEL:
[Y$1] (b0);
Y ON X (b1);
Y ON W (b2);
Y ON XW (b3);

代码解读6

USEVARIABLES = X W Y XW;
CATEGORICAL = Y;
DEFINE:
XW = X*W;
ANALYSIS:
TYPE = GENERAL;
ESTIMATOR = ML;
MODEL:
[Y$1] (b0);
Y ON X (b1);
Y ON W (b2);
Y ON XW (b3);
MODEL CONSTRAINT:
NEW(LOW_W MED_W HIGH_W OR_LO OR_MED OR_HI);
LOW_W = #LOWW;
MED_W = #MEDW;
HIGH_W = #HIGHW;
OR_LO = exp(b1 + b3*LOW_W);
OR_MED = exp(b1 + b3*MED_W);
OR_HI = exp(b1 + b3*HIGH_W);

代码解读7

USEVARIABLES = X W Y XW;
CATEGORICAL = Y;
DEFINE:
XW = X*W;
ANALYSIS:
TYPE = GENERAL;
ESTIMATOR = ML;
MODEL:
[Y$1] (b0);
Y ON X (b1);
Y ON W (b2);
Y ON XW (b3);
MODEL CONSTRAINT:
NEW(LOW_W MED_W HIGH_W OR_LO OR_MED OR_HI);
LOW_W = #LOWW;
MED_W = #MEDW;
HIGH_W = #HIGHW;
OR_LO = exp(b1 + b3*LOW_W);
OR_MED = exp(b1 + b3*MED_W);
OR_HI = exp(b1 + b3*HIGH_W);
PLOT(PLOMOD PMEDMOD PHIMOD);

代码解读8

USEVARIABLES = X W Y XW;
CATEGORICAL = Y;
DEFINE:
XW = X*W;
ANALYSIS:
TYPE = GENERAL;
ESTIMATOR = ML;
MODEL:
[Y$1] (b0);
Y ON X (b1);
Y ON W (b2);
Y ON XW (b3);
MODEL CONSTRAINT:
NEW(LOW_W MED_W HIGH_W OR_LO OR_MED OR_HI);
LOW_W = #LOWW;
MED_W = #MEDW;
HIGH_W = #HIGHW;
OR_LO = exp(b1 + b3*LOW_W);
OR_MED = exp(b1 + b3*MED_W);
OR_HI = exp(b1 + b3*HIGH_W);
PLOT(PLOMOD PMEDMOD PHIMOD);
LOOP(XVAL,1,5,0.1);
PLOMOD = 1/(1 + exp(-1*((b0 + b2*LOW_W) + (b1 + b3*LOW_W)*XVAL)));
PMEDMOD = 1/(1 + exp(-1*((b0 + b2*MED_W) + (b1 + b3*MED_W)*XVAL)));
PHIMOD = 1/(1 + exp(-1*((b0 + b2*HIGH_W) + (b1 + b3*HIGH_W)*XVAL)));

代码解读9

USEVARIABLES = X W Y XW;
CATEGORICAL = Y;
DEFINE:
XW = X*W;
ANALYSIS:
TYPE = GENERAL;
ESTIMATOR = ML;
MODEL:
[Y$1] (b0);
Y ON X (b1);
Y ON W (b2);
Y ON XW (b3);
MODEL CONSTRAINT:
NEW(LOW_W MED_W HIGH_W OR_LO OR_MED OR_HI);
LOW_W = #LOWW;
MED_W = #MEDW;
HIGH_W = #HIGHW;
OR_LO = exp(b1 + b3*LOW_W);
OR_MED = exp(b1 + b3*MED_W);
OR_HI = exp(b1 + b3*HIGH_W);
PLOT(PLOMOD PMEDMOD PHIMOD);
LOOP(XVAL,1,5,0.1);
PLOMOD = 1/(1 + exp(-1*((b0 + b2*LOW_W) + (b1 + b3*LOW_W)*XVAL)));
PMEDMOD = 1/(1 + exp(-1*((b0 + b2*MED_W) + (b1 + b3*MED_W)*XVAL)));
PHIMOD = 1/(1 + exp(-1*((b0 + b2*HIGH_W) + (b1 + b3*HIGH_W)*XVAL)));
PLOT: TYPE = plot2;

代码解读10

USEVARIABLES = X W Y XW;
CATEGORICAL = Y;
DEFINE:
XW = X*W;
ANALYSIS:
TYPE = GENERAL;
ESTIMATOR = ML;
MODEL:
[Y$1] (b0);
Y ON X (b1);
Y ON W (b2);
Y ON XW (b3);
MODEL CONSTRAINT:
NEW(LOW_W MED_W HIGH_W OR_LO OR_MED OR_HI);
LOW_W = #LOWW;
MED_W = #MEDW;
HIGH_W = #HIGHW;
OR_LO = exp(b1 + b3*LOW_W);
OR_MED = exp(b1 + b3*MED_W);
OR_HI = exp(b1 + b3*HIGH_W);
PLOT(PLOMOD PMEDMOD PHIMOD);
LOOP(XVAL,1,5,0.1);
PLOMOD = 1/(1 + exp(-1*((b0 + b2*LOW_W) + (b1 + b3*LOW_W)*XVAL)));
PMEDMOD = 1/(1 + exp(-1*((b0 + b2*MED_W) + (b1 + b3*MED_W)*XVAL)));
PHIMOD = 1/(1 + exp(-1*((b0 + b2*HIGH_W) + (b1 + b3*HIGH_W)*XVAL)));
PLOT: TYPE = plot2;
OUTPUT: STAND;

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