Dear All,
I am doing Dif in Dif Regression, I have started by creating a dummy that indicates if the local authority is within treated group (dummy=1) or within control group (dummy=0). The name of the dummy is "treated"
But because local authorities was treated during different periods if time, I have generated dummies for each single date. of the treatment.
I would like to know how should I write the command of the interaction, and how I should proceed as well, this is my first time to use Dif in Dif.
The variables I have are as follows;
Thank you,
ALI
I am doing Dif in Dif Regression, I have started by creating a dummy that indicates if the local authority is within treated group (dummy=1) or within control group (dummy=0). The name of the dummy is "treated"
But because local authorities was treated during different periods if time, I have generated dummies for each single date. of the treatment.
I would like to know how should I write the command of the interaction, and how I should proceed as well, this is my first time to use Dif in Dif.
The variables I have are as follows;
Code:
. describe
Contains data from pollutiondata_withLACs.dta
obs: 1,595,015
vars: 87 3 Apr 2018 14:
> 34
size: 650,766,120
------------------------------------------------------------
storage display value
variable name type format label variable label
------------------------------------------------------------
no2 int %10.0g Aberdeen
sitename str29 %29s
code str9 %9s
background_ur~n float %9.0g
traffic_urban float %9.0g
background_ru~l float %9.0g
background_su~n float %9.0g
industrial_ur~n float %9.0g
industrial_su~n float %9.0g
startdate float %td
enddate float %td
localauthority str36 %36s LOCAL
AUTHORITY
declaredate1 float %td
declaredate2 float %td
declaredate3 float %td
revokedate1 float %td
revokedate2 float %td
mes_date float %td
active float %9.0g
elapsedeclard~1 float %9.0g
treated float %9.0g
Jun29_01 float %9.0g
Dec01_08 float %9.0g
Nov25_08 float %9.0g
Feb08_10 float %9.0g
Oct03_01 float %9.0g
Feb01_02 float %9.0g
Jul01_04 float %9.0g
Jan10_03 float %9.0g
Oct18_05 float %9.0g
Jul01_05 float %9.0g
Mar08_02 float %9.0g
May01_06 float %9.0g
Sep01_06 float %9.0g
Mar15_01 float %9.0g
Dec08_04 float %9.0g
May01_01 float %9.0g
Mar15_07 float %9.0g
Jul17_02 float %9.0g
Apr01_05 float %9.0g
Sep20_02 float %9.0g
Jul28_06 float %9.0g
May02_06 float %9.0g
Dec01_00 float %9.0g
Dec02_05 float %9.0g
Sep01_02 float %9.0g
Jun29_10 float %9.0g
Nov21_05 float %9.0g
Sep01_15 float %9.0g
Jul31_03 float %9.0g
Feb23_05 float %9.0g
Aug01_01 float %9.0g
Dec31_00 float %9.0g
Mar10_05 float %9.0g
Apr25_16 float %9.0g
Jul01_07 float %9.0g
Aug01_05 float %9.0g
Mar18_10 float %9.0g
Sep01_08 float %9.0g
Jul01_01 float %9.0g
Aug23_06 float %9.0g
Dec14_09 float %9.0g
Jan01_11 float %9.0g
Apr30_02 float %9.0g
Aug31_10 float %9.0g
Sep09_14 float %9.0g
Jul01_08 float %9.0g
Jul01_10 float %9.0g
Dec04_00 float %9.0g
Nov23_01 float %9.0g
Feb03_14 float %9.0g
Apr01_09 float %9.0g
Mar01_07 float %9.0g
Dec16_06 float %9.0g
Mar09_99 float %9.0g
Nov01_00 float %9.0g
Jun29_06 float %9.0g
Jun01_03 float %9.0g
Mar30_01 float %9.0g
Jan01_01 float %9.0g
Nov03_03 float %9.0g
Jul31_01 float %9.0g
Jul18_01 float %9.0g
Jul06_12 float %9.0g
Apr01_08 float %9.0g
Dec31_04 float %9.0g
Jan06_03 float %9.0g
ALI
