DID 安慰剂检验的结构化 Stata 工作流（陈强/齐霁/颜冠鹏 2025 实践指南）。覆盖时间/空间/混合/外部四类 placebo，TWFE 默认、CSDID 升级。
Predicting placebo response using machine learning on psychological, personality, and clinical trial features.
Difference-in-Differences analysis of refugee inflows and crime rates in German regions (2010–2020)
Tests an LLM trading agent against 2,000 placebo twins on Bitget's 24/7 stock perps, with a pre-registered deploy verdict
Out-of-sample evaluation of geopolitical risk as a carbon-price predictor, with a dimension-matched placebo design. Replication code for "Geopolitical Risk and Carbon Price Predictability: An Effect That Disappears."
End-to-End Python implementation of Rios, Barba & Gianmoena's (2026) Sender-Side sanctions incidence engine. Implements a two-wave CCE imputation counterfactual measuring the price and output costs borne by countries sanctioning Russia, with incremental vs level ATTs, bootstrap and placebo inference, and Russian-energy exposure gradients.
Estimates what a marketing campaign added to sales and publishes the estimate only when conditions declared in advance hold. Otherwise it publishes a refusal that names the condition that failed.
Событийное исследование индексного эффекта на Московской бирже: что происходит с ценой и ликвидностью акции при включении в индекс IMOEX и исключении из него
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