We analyse a large telematics data with 65 driving variables (DVs) and insurance claim counts for 14,157 drivers. Our aim is to predict future claims according to driving behaviour measured by the DVs, to identify important DVs that differentiate driving behaviours, classify drivers according to...

This study investigates whether, and, if so, how, the stringent administration of taxes resulting from the Chinese corporate income tax collection reform (the 2002 CITC Reform) affects the intensity of the discharge of pollution by firms. The 2002 CITC Reform, launched on 1 January 2002,...

We study nonparametric regression in a setting where N(N-1) dyadic outcomes are observed for N randomly sampled units. Outcomes across dyads sharing a unit in common may be dependent (i.e., our dataset exhibits dyadic dependence). We present two sets of results. First, we calculate lower bounds...

This paper analyzes 30+ years of county data including soil, weather, and yield of corn provided by Seong Do Yun and Benjamin M Gramig. With the prevalent rise in organic agriculture, ruralities slowly suffer from less optimized crop growth. The paper depicts the use of a polynomial regression...

Two-way fixed effects (TWFE) regressions with period and group fixed effects are widely used to estimate policies' effects: 26 of the 100 most cited papers published by the American Economic Review from 2015 to 2019 estimate such regressions. Researchers have long thought that TWFE estimators...

Wage rigidity is an important explanation for unemployment fluctuations. In benchmark models wages for new hires are key, but there is limited evidence on this margin. We use wages posted on vacancies, with job and establishment information, to measure the wage for new hires. We show that our...

Population-based screening can prevent disease but also induce false positives to use low-value healthcare. Using data on individuals aged 40+ in rural South Africa and a multidimensional regression discontinuity design, we estimate effects of clinical referral based on blood pressure (BP) above...