Editing Decompression sickness (section)

=== Onset ===
Although onset of DCS can occur rapidly after a dive, in more than half of all cases symptoms do not begin to appear for at least an hour. In extreme cases, symptoms may occur before the dive has been completed. The [[U.S. Navy]] and [[Technical Diving International]], a leading technical diver training organization, have published a table that documents time to onset of first symptoms. The table does not differentiate between types of DCS, or types of symptom.{{r|usn520-3.1 | TdiDpm}}
{| class="wikitable" style="text-align: center;"
|+ Onset of DCS symptoms
|-
! scope="col" | Time to onset
! scope="col" | Percentage of cases
|-
! scope="row" | within 1 hour
| 42%
|-
! scope="row" | within 3 hours
| 60%
|-
! scope="row" | within 8 hours
| 83%
|-
! scope="row" | within 24 hours
| 98%
|-
! scope="row" | within 48 hours
| 100%
|}