Aneurysmal SAH, non-traumatic SAH hospitalisations before and during the pandemic
Immediately before and during the pandemic | 1 year before and during the pandemic | |||||||||
N | n1 | n2 | Relative change % (95% CI) | P value | N | n1 | n2 | Relative change % (95% CI) | P value | |
Aneurysmal SAH | 56 | 834 | 626 | −24.9 (−28.0 to −22.1) | <0.0001 | 37 | 435 | 370 | −14.9 (−18.6 to −11.9) | 0.022 |
Non-traumatic SAH* | 85 | 1451 | 1094 | −24.6 (−26.9 to −22.5) | <0.0001 | 53 | 744 | 628 | −15.6 (−18.4 to −13.1) | 0.002 |
n1 immediately before the pandemic is based on 3-month data from December 2019 to February 2020. n1 1 year before is based on 3-month data from March 2019 to May 2019. n2 is based on 3-month control data during the COVID-19 from March 2020 to May 2020 for both analyses.
P value is from the Poisson means test.
*Non-traumatic SAH include aneurysms and perimesencephalic SAH.
n, number of admissions; N, number of hospitals; SAH, subarachnoid haemorrhage.