Table 1.
States with stay-at-home orders as of the date of data collection.a
| State | Policy announcement date | Policy effect date | Day difference (rounded) | Cumulative state incidence (cases), nb | Estimated IRc (per 100,000 people)d |
| California | Thursday, March 19 | Thursday, March 19 | 0 | 2267 | 5.7 |
| Connecticut | Friday, March 20 | Monday, March 23, 8 PM | 3 | 415 | 11.6 |
| Delaware | Sunday, March 22 | Tuesday, March 24, 8 AM | 2 | 87 | 8.9 |
| Illinois | Friday, March 20 | Saturday, March 21, 5 PM | 1 | 1285 | 10.2 |
| Louisiana | Sunday, March 22 | Monday, March 23, 5 PM | 1 | 1210 | 26.0 |
| Massachusetts | Monday, March 23 | Tuesday, March 24, noon | 1 | 777 | 11.1 |
| Michigan | Monday, March 23 | Tuesday, March 24, 12:01 AM | 1 | 1335 | 13.3 |
| New Jersey | Saturday, March 21 | Saturday, March 21, 9 PM | 0 | 2844 | 31.8 |
| New York | Friday, March 20 | Sunday, March 22, 8 PM | 2 | 25,665 | 132.0 |
| Ohio | Sunday, March 22 | Monday, March 23, 11:59 PM | 1 | 443 | 3.8 |
| West Virginia | Monday, March 23 | Tuesday, March 24, 8 PM | 1 | 22 | 1.2 |
aAll data represented as of March 24, 2020. Policy dates were taken from examination of state news reporting as well as local government websites.
bCumulative incidence (total cases) as of March 24, 2020, 1:14 PM EST [19].
cIR: infection rate.
dTotal state population based on 2020 census records.