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13 changes: 7 additions & 6 deletions docs/api/covidcast-signals/nchs-mortality.md
Original file line number Diff line number Diff line change
Expand Up @@ -88,12 +88,13 @@ There is a lag in time between when the death occurred and when the death
certificate is completed, submitted to NCHS, and processed for reporting
purposes. The death counts for recent weeks are continually revised and may
increase or decrease as new and updated death certificate data are received from
the states by NCHS. This delay can range from 1 to 8 weeks or even more.
Some states report deaths on a daily basis, while other states report deaths weekly
or monthly. State vital record reporting may also be affected or delayed by
COVID-19 related response activities which make death counts not comparable
across states. We check for updates reported by NCHS every weekday but will
report the signals weekly (on Monday).
the states by NCHS. This delay can range from 1 to 8 weeks or even more; review
[this detailed analysis of reporting delays](https://doi.org/10.1057/s41271-021-00309-7)
for more information. Some states report deaths on a daily basis, while other
states report deaths weekly or monthly. State vital record reporting may also be
affected or delayed by COVID-19 related response activities which make death
counts not comparable across states. We check for updates reported by NCHS every
weekday but will report the signals weekly (on Monday).

## Source and Licensing

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