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  • Panel Sample Size: Is it too small for GMM applications??

    Dear all,

    I have created a panel sample comprised of 13 companies and for a 7 year period (i.e. 91 company years in total: strongly balanced panel). Moreover, this panel set includes 14 variables (plus 7 year dummies to control for time effect).

    Is this dataset too small in order for my xtabond2 - with Windmeijer's correction - models to produce robust results?

    Thank you in advance for the help.
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