Commentary: Test-Negative Design Reduces Confounding by Healthcare-Seeking Attitude in Case-Control Studies

• Kotaro Ozasa,
• Wakaba Fukushima

Affiliations

Kotaro Ozasa

Department of Epidemiology, Radiation Effects Research Foundation, Hiroshima, Japan

Wakaba Fukushima

Department of Public Health, Osaka City University Graduate School of Medicine, Osaka, Japan