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ceq-modern-did

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Use when a 《经济学(季刊)》 (China Economic Quarterly, CEQ) manuscript uses difference-in-differences with staggered adoption or heterogeneous treatment effects — to bring it into compliance with modern estimators (Callaway–Sant'Anna, de Chaisemartin–D'Haultfœuille, Sun–Abraham) instead of bare two-way fixed effects. Bare TWFE on staggered timing is a near-certain reject at CEQ.

China-Economic-Quarterly-Skills/skills/ceq-modern-did/SKILL.md

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Nov 9, 2026

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Sep 27, 2026
License
MIT

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# 现代 DID 合规（ceq-modern-did）

## 触发时机

- 处理时点**交错**（不同单位不同时间被处理），但只跑了 TWFE
- 处理效应可能随队列/时间**异质**
- 审稿人提"负权重 / 坏比较 / 前置效应"等批评

## 核心判断：你的 DID 是哪一类？

| 情形 | 是否有 TWFE 偏误 | 处理 |
|------|------------------|------|
| 单一时点、两组 | 通常无 | 标准 DID 即可，仍画事件研究图 |
| 交错处理 + 同质效应 | 轻 | 仍建议稳健估计量交叉验证 |
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