Past Research
Physicians' factors associated with quality and costs of care
Physician spending
This study investigates the variation in spending across physicians and its association with patient outcomes. (Tsugawa et al. JAMA Intern Med, 2017)

Physician age
This study investigates whether outcomes of patients who were admitted to hospital differ between those treated by younger and older physicians. (Tsugawa et al. JAMA Intern Med, 2017)
Access the study about physician age

Surgeons' factors associated with quality and costs of care and patient outcomes, and the utilization of care
Surgeons’ age and gender
This study investigates whether patients’ mortality differs according to the age and sex of surgeons. (Tsugawa et al. BMJ, 2018)

Surgeons' birthday
This study investigates whether patient mortality after surgery differs between surgeries performed on surgeons’ birthdays compared with other days of the year. (Kato, Jena, Tsugawa. BMJ, 2020)
