September 2021 Summary Statistics

I will present some summary statistics which can explain the trends that we observed during the month of September 2021. This complements similar reports from previous months.

Total Case Growth
Total cases on 31 August: 456,032
Total cases on 30 September: 486,904
Total case increase: 30,872

Smallest daily case increase: 695 (7 September)
Largest daily case increase: 1,448 (10 September)

Average daily increase: 1,029








Total Fatality Growth
Total fatalities on 31 August: 7,439
Total fatalities on 30 September: 7,622
Total fatality increase: 183

Smallest daily fatality increase: 0 (18 September)
Largest daily fatality increase: 15 (30 September)

Average daily increase: 6.10




State-Level Shares for September 2021

Median share of regional cases for Maryland: 44%
Median share of regional fatalities for Maryland: 52%
Maryland share of DC metropolitan-area population: 42%

Median share of regional cases for DC: 12%
Median share of regional fatalities for DC: 15%
DC share of DC metropolitan-area population: 13%

Median share of regional cases for Virginia: 44%
Median share of regional fatalities for Virginia: 33%
Virginia share of DC metropolitan-area population: 45%







Population-adjusted statistics, per 1,000 of population (data as of 30 September)
MD cases: 84.806
MD fatalities: 1.615

DC cases: 79.108
DC fatalities: 1.651

VA cases: 78.789
VA fatalities: 0.963





Comments

  1. ronbrownfanOctober 6, 2021 at 4:14 PM

    For all three jurisdictions (MD, DC, VA) the share of new cases now closely matches the population shares, with MD slightly ahead of DC and VA in population-adjusted cases.

    However, the share of fatalities for VA is significantly less than its population share, with MD and DC shares significantly higher. Wonder how much of this has to do with differences in vaccination shares among the three jurisdictions, or with differences in population demographics.

    ReplyDelete

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