Table 1.

Cerebral venous sinus thrombosis admissions: overall 1-year and monthly volumes before and during the COVID-19 pandemic

Variable	Overall volume					Monthly volume*
	No. of hospital	No. †	No. ‡	Change	P	No. of hospital	Before COVID-19	During COVID-19	P
Overall	163	1,139	1,174	3.1 (2.2–4.2)	0.47	171	0.60±0.12	0.61±0.12	0.97
Primary vs. comprehensive stroke center§
Primary	39	201	229	13.9 (9.8–19.4)	0.18	42	0.52±0.16	0.57±0.18	0.20
Comprehensive	124	938	945	0.7 (0.4–1.5)	0.87	129	0.70±0.18	0.69±0.17	0.66
Center COVID-19 volume∥
Low	51	216	246	13.9 (9.9–19.1)	0.16	52	0.50±0.12	0.55±0.13	0.11
Intermediate	50	267	312	16.9 (12.8–21.8)	0.06	50	0.39±0.21	0.47±0.21	0.07
High	49	536	509	–5.0 (–7.2 to –3.5)	0.40	52	1.07±0.26	1.02±0.26	0.43

Values are presented as percentage (95% confidence interval) or adjusted mean±standard error.

COVID-19, coronavirus disease 2019.

^*The monthly volume analysis is adjusted for the date of peak COVID-19 volume for each country, the start date of the second wave, and the continent;

^†Number of admissions during 12 months before the COVID-19 pandemic;

^‡Number of admissions during 12 months of COVID-19 pandemic;

^§Primary vs. Comprehensive, P<0.0001;

^∥Low vs. Intermediate (P=0.366), Low vs. High (P=not available), Intermediate vs. High (P=not available).