如何使用estout堆叠方程？如何堆叠汇总统计表中的est1与est2？

Let's tackle your two questions step by step—first stacking est1 and est2 vertically, then stacking equations within a model.

1. Stacking est1 and est2 Vertically (Model Stacking) #

If you want to display the results of est1 and est2 one below the other (each model's full set of variable estimates in separate sections), here's how to do it:

First, confirm you've stored your models as estimates (replace the example code with your actual model specifications):

// Example: Store two regression models
sysuse auto, clear
reg price mpg weight if foreign == 0
estimates store est1
reg price mpg weight length if foreign == 0
estimates store est2

Then use esttab with the layout(vertical) option to stack the models vertically. Add a separator between them with separate for clarity:

esttab est1 est2, layout(vertical) separate ///
    title("Vertical Stack of est1 and est2") ///
    se star(* 0.1 ** 0.05 *** 0.01)

This will output est1's results first, followed by a horizontal line, then est2's results—all stacked vertically.

If you prefer to arrange models as rows (with variables as columns, each row showing a model's coefficient for that variable), use the transpose option instead:

esttab est1 est2, transpose ///
    title("Model Results as Rows") ///
    se star(* 0.1 ** 0.05 *** 0.01)

2. Stacking Equations (Within a Single Model) #

For models with multiple equations (like sur, reg3, or seemingly unrelated regressions), you can stack equations vertically instead of displaying them side by side using the stack option.

Example workflow:

// Estimate a multi-equation model
sysuse auto, clear
reg3 (price mpg weight) (length mpg weight)
estimates store multi_eq_model

Then use esttab with stack to stack the equations, and eqlabels to add clear labels for each equation:

esttab multi_eq_model, stack ///
    title("Stacked Equations") ///
    se star(* 0.1 ** 0.05 *** 0.01) ///
    eqlabels("Price Equation" "Length Equation")

The stack option will list each equation's coefficients one after another, rather than placing them in separate columns.

内容的提问来源于stack exchange，提问作者Yan Song