Regression-Discontinuity Design - Institute for Policy Research
Regression-Discontinuity Design - Institute for Policy Research
Regression-Discontinuity Design - Institute for Policy Research
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Analytic assumption 2<br />
• Correct specification of bandwidth <strong>for</strong> non‐parametric estimates<br />
– Used Imbens & Kalyanaraman (2010) algorithm <strong>for</strong> choosing optimal<br />
bandwidth<br />
– Estimated treatment effects using bandwidths that were ½ and double the<br />
size of the IK optimal bandwidth to check robustness of estimates.<br />
Optimal BW: Treatment effect <strong>for</strong> Non‐parametric (4): 6.48<br />
TR est: 13.21 / CI <strong>for</strong> TR: 10.94 ‐ 15.48<br />
CO est: 6.73 / CI <strong>for</strong> CO: 5.92 ‐ 7.55<br />
½ Optimal BW: Treatment effect <strong>for</strong> Non‐parametric (2): 5.1<br />
TR est: 12 / CI <strong>for</strong> TR: 10.75 ‐ 13.25<br />
CO est: 6.9 / CI <strong>for</strong> CO: 5.93 ‐ 7.87<br />
Double optimal BW: Treatment effect <strong>for</strong> Non‐parametric (8): 5.89<br />
TR est: 12.27 / CI <strong>for</strong> TR: 10.86 ‐ 13.69<br />
CO est: 6.39 / CI <strong>for</strong> CO: 5.74 ‐ 7.04