Inquiry on Optimum Time Period for Long- and Short-Term Panel Data Analysis

[Umer Aziz]

Respected Professors and Scholars,

I hope you are doing well. I am currently working on a panel data study and would like your guidance regarding the optimal time period required for both short-term and long-term panel data analyses.

Specifically, I am seeking clarity on:

1. What is generally considered an adequate time span for short-term panel analysis?

2. What minimum number of years is recommended for long-term panel analysis to capture structural and dynamic effects reliably?

3. Any scholarly references or empirical studies that justify these recommended time periods.

Thank you in advance.