Table 2

aSAH admissions overall and monthly volumes per continent before and during the COVID-19 pandemic

Overall volumeMonthly volume*
Nn1n2ChangeP valueNImmediately beforeDuring
COVID-19
P value
% (95% CI)Adjusted mean (SE)
Overall16569126471−6.4 (−7.0 to −5.8)0.00011723.84 (0.75)3.62 (0.74)0.030
Europe5920561944−5.4 (−6.5 to −4.6)0.077622.90 (0.33)2.74 (0.36)0.290
North America4818561849−0.38 (−0.78 to −0.18)0.908483.22 (0.51)3.21 (0.46)0.908
Asia4523402178−6.9 (−8.0 to −6.0)0.016484.28 (0.81)4.03 (0.72)0.270
South America8435291−33.1 (−37.7 to −28.8)<0.000194.84 (2.09)3.28 (1.36)0.121
Africa41461460.0 (0 to 2.6)1.043.04 (0.23)3.04 (0.23)1.0
Oceania17963−20.3 (−30.4 to −12.9)0.1801
  • *The monthly volume analysis for each continent is adjusted for the date of peak COVID-19 volume for each country and the start date of the second wave. The overall monthly volume analysis is also adjusted for the continent.

  • .aSAH, aneurysmal subarachnoid haemorrhage; n1, number of admissions during 12 months before the COVID-19 pandemic; n2, number of admissions during 12 months of COVID-19 pandemic; n, number of hospitals; SAH, subarachnoid haemorrhage.