Table 2: Performance of the risk models to predict risk of COVID-19 death by sex and time period for total cohort.

	First period (24th January 2020–30th April 2020)			Second period (1st May 2020–28th July 2020)
	COVID-19 death in females	COVID-19 deaths in males		COVID-19 death in females	COVID-19 deaths in males
R-squared statistic	0.691 (0.671–0.710)	0.688 (0.669–0.704)		0.721 (0.698–0.742)	0.711 (0.686–0.733)
D statistic	3.062 (2.922–3.202)	3.036 (2.913–3.159)		3.293 (3.113–3.472)	3.207 (3.024–3.390)
Harrell’s C statistic	0.930 (0.920–0.940)	0.929 (0.921–0.937)		0.950 (0.942–0.959)	0.933 (0.921–0.945)
Brier score	0.0005	0.0007		0.0003	0.0003

Data are estimated (95% CI).