SPUR: Stata Package around Spatial Unit Roots

Stata package that implements the methods developed in Müller and Watson (2024) to test for and correct for spatial unit roots in regressions.

View

• Accompanying working paper
• Stata package on Github

Citation

When using this package, please cite the following working paper:

Becker, Sascha O., P. David Boll and Hans-Joachim Voth “Spatial Unit Roots in Regressions: A Practitioner’s Guide and a Stata Package”, The Warwick Economics Research Paper Series (TWERPS) 1541 (2025), University of Warwick, Department of Economics.

@TechReport{becker2025,
  author={Becker, Sascha O. and Boll, P. David and Voth, Hans-Joachim},
  title={Spatial Unit Roots in Regressions: A Practitioner's Guide and a Stata Package},
  year=2025,
  institution={University of Warwick, Department of Economics},
  type={The Warwick Economics Research Paper Series (TWERPS)},
  url={https://warwick.ac.uk/fac/soc/economics/research/workingpapers/2025/twerp_1541-_becker.pdf},
  number={1541},
}