I haven't done a regression discontinuity design (RDD) before. I know it requires a large sample size for identification, thus I fear that my sample size is not large enough.
The study is cross-sectional, not longitudinal. Entire sample size is around 1000, and the sample size around the cutoff point is around 100.
Is it enough for a cross-sectional fuzzy RDD?
What is the "minimum" sample size and "good-enough" sample size for cross-sectional fuzzy (sharp) RDD?