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Phil Nguyen's user avatar
Phil Nguyen's user avatar
Phil Nguyen's user avatar
Phil Nguyen
  • Member for 3 years, 2 months
  • Last seen more than a month ago
  • New Zealand
0 votes
1 answer
33 views

Asking for subsample test approaches

0 votes
1 answer
45 views

Revisiting whether we can control for three dimensions or not?

3 votes
2 answers
726 views

How clustering affects standard error?

0 votes
2 answers
126 views

What does "unit level" mean?

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2 answers
969 views

Have you ever seen any paper controlling for firm, industry, and year fixed effect at the same time?

1 vote
1 answer
62 views

Why including individual level variables help to control for confounding events?

1 vote
1 answer
70 views

Can Difference-in-Difference be used when the treatment effects get smaller with time since treatment?

1 vote
1 answer
121 views

Why standard errors in country-level variables are higher than that in firm-level variables?

1 vote
1 answer
75 views

How to classify sample by time-variant index?

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1 answer
128 views

Curiousity about the significance symbol in Stata?

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1 answer
269 views

When I should concern if the number of observation varies quite a bit?

1 vote
1 answer
103 views

Is there any intuitive example for multi-valued treatment?

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1 answer
40 views

Whether we must cluster by country with staggered laws implementation?

0 votes
1 answer
26 views

Is there any special reason to use the character "k" standing for the "early"?

5 votes
1 answer
10k views

What are the main differences among xtreg, areg, reghdfe?

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0 answers
35 views

An ambiguous description in Dasgupta, 2019 regarding the coefficients and choosing baseline specification

5 votes
1 answer
310 views

What shoud we do when the expected treatment overlaps control sample in DID?

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1 answer
73 views

How to get the condition of OLS mathematically?

4 votes
2 answers
967 views

Why we need at least 40 groups to be properly clustered?

2 votes
1 answer
728 views

Why the larger the sample, the lower standard deviation?

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0 answers
44 views

How many ways to call dependent and independent variables?

3 votes
2 answers
241 views

Will excluding the intercept affect other variables' coefficients?

0 votes
1 answer
40 views

Why different law implementation dates is less susceptiable to concurrent but unrelated economics shocks?

1 vote
0 answers
120 views

What is the "recursive moral hazard theory" of "trade credit"?

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1 answer
48 views

What should we conclude when the significant levels are different but the sign are similar among coefficients of variable of interest?

1 vote
1 answer
38 views

What is the economic word for firms buy material in credit?

1 vote
0 answers
30 views

References for regional classification

3 votes
2 answers
319 views

What does "Difference-in-Diffrence" models with heterogeneous effects" mean?

0 votes
1 answer
58 views

When we should use $R^2$ instead of adjusted $R^2$?

1 vote
1 answer
615 views

Why excluding intercept is dangerous if there is no literature back up in DID setting?