Table 8.
Thematic evolution per year: 5 most frequent themes per year of publication.
| Order of Appearance | |||||
|---|---|---|---|---|---|
| Year | 1st | 2nd | 3rd | 4th | 5th |
| 1989 | Personnel | Duty | Disaster | Hospital | Volunteer |
| 2004 | Nurse | Preparedness | Readiness | Critical | Work |
| 2005 | Care | Health | Disaster | Willingness | Outbreak |
| 2006 | Professional | Hospital | Employee | Family | Influenza |
| 2007 | Provider | Work | Emergency | Incident | Mass |
| 2008 | Hospital | Personnel | Influenza | Pandemic | Respond |
| 2009 | Pandemic | Influenza | Worker | Disaster | Healthcare |
| 2010 | Pandemic | Health | Influenza | Willingness | Emergency |
| 2011 | Pandemic | Care | Paramedic | Influenza | Willingness |
| 2012 | Disaster | Healthcare | Willingness | Personnel | Public |
| 2013 | Nurse | Disaster | Pandemic | Willingness | Influenza |
| 2014 | Disaster | Health | Preparedness | Emergency | Response |
| 2015 | Worker | Influenza | Care | Emergency | Preparedness |
| 2016 | Staff | Hospital | Medical | Nurse | Outbreak |
| 2017 | Emergency | Infectious | Response | Willingness | Preparedness |
| 2018 | Firefighter | Personnel | Family | Health | Duty |
| 2019 | Willingness | Work | Nurse | Condition | Threat |
| 2020 | Pandemic | Willingness | Disaster | COVID | Healthcare |
| 2021 | COVID | Work | Pandemic | Willingness | Worker |