Mean TTR, % (95% CI)	Mean difference TTR, % (95% CI)	Mean time above range, % (95% CI)	Mean difference time above range,% (95% CI)	Mean VGR (95% CI)	Mean difference VGR (95% CI)	INR ≥ 5.0 /all INR (%)	RR of INR ≥ 5.0 (95% CI)
26 weeks before COVID‐19	80 (75 to 85)	reference	17 (13 to 22)	reference	1.4 (0.8 to 2.0)	reference	19/641 (3%)	reference
6 weeks after COVID‐19	59 (51 to 68)	‐23 (‐32 to ‐14)	38 (30 to 47)	24 (14 to 33)	5.7 (3.0 to 8.5)	4.8 (2.1 to 7.5)	35/247 (14%)	4.8 (2.8 to 8.2)
6‐12 weeks after COVID‐19	79 (69 to 89)	‐1.3 (‐13 to 10)	18 (8 to 27)	1 (‐11 to 13)	3.6 (0 to 7.4)	2.5 (‐1.4 to 6.4)	10/154 (6%)	2.1 (1.0 to 4.6)