I want to specify the number of observation for each firm .

[hussein bataineh]

please according to the paper im following

i need To reduce the estimation bias arising from the relatively short sample period, we required the sampled firms to have at least five observations in the data set

Im not sure how i can code this using Stata in my regression

reg y x1 x2 x3


Could i get advice for this please

[Nick Cox]

Data example please showing which variable specifies the firm.

[hussein bataineh]

i identify the firm using ticker and year so what should i added to the model to let STATA know to only take the firm that have at least five observations in the data set

reg pensionassetallocationequitywh gender csoleveleducation race fourthtenure firmsizewh ROAwh operationcashflowvolatilitywh leveragewh dividendpayoutwh boardsizewh boardindependencewh contributionwh pension_sizewh durationwh planreturnswh discountratewh mergersaquisitions i.sic i.year



This what written in the paper im following could you help in this please

To reduce the estimation bias arising from the relatively short sample period, we required the sampled firms to have at least five observations in the data set (Lavie, 2007).

[Nick Cox]

Sorry, but when I asked for a data example I was alluding to https://www.statalist.org/forums/help#stata 12.2

New posters are prompted to read that FAQ Advice before posting.