Detect and Fix String-Encoded Numerics in Stata
Stata imports may store numeric-looking variables as strings, breaking analysis commands. Learn to detect the type with describe and convert safely using destring.
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Why Stata’s `import excel` Is the Right Choice for Quick Data Loads – and When to Avoid It
Learn how to pull spreadsheet data directly into Stata with `import excel`, the trade‑offs involved, and a step‑by‑step example that shows how to verify the import’s integrity.
Stata merge command: choosing between 1:1 and m:1 joins without duplicating data
Learn when to use Stata's 1:1 and m:1 merge commands, how the _merge variable works, and how to avoid type mismatches and data duplication when combining datasets.
Stata Frames as In-Memory Workspaces for Safer Data Pipelines
Use Stata frames as named in-memory workspaces to isolate raw, cleaned and analysis data. Move results explicitly with frame put and frame get instead of relying on nested preserve/restore or disk tempfiles.
Diagnosing and Fixing Stata 'No room to add more variables' Errors
Step‑by‑step guide to identify memory and variable‑limit causes, apply fixes, and verify the solution in Stata.
Using Stata’s margins command to compute age‑varying marginal effects after logistic regression
Compute age‑varying marginal effects after a logistic regression in Stata, verify with manual calculation or bootstrap, and watch for speed and SE limitations.
Reading Past the Coefficients: Making Stata's margins Do the Interpretation Work
Logit coefficients don't answer real questions. Stata's margins command turns them into adjusted predictions and average marginal effects — here's how to use it, and where it can mislead.
Fixed-Effects Panel Regression in Stata: What the Within Transformation Actually Drops
Fixed-effects regression in Stata sweeps out entity-specific intercepts, but the within transformation drops all time-invariant variables and requires strict exogeneity. This blog walks through the mechanics, a worked firm-level example, and the trade-offs you accept when you type xtreg, fe.
Stata merge: choosing the right merge type and avoiding duplicate-key traps
How to pick the right Stata merge type (1:1, 1:m, m:1), validate keys with isid and duplicates tag, and read the _merge variable to catch mismatches before they corrupt your data.