Table 2.
Keywords with the highest index of degree centrality, closeness, and betweenness
| Label | Degree | Label | Closeness | Label | Betweenness | |
|---|---|---|---|---|---|---|
| 1 | COVID-19 | 225 | COVID-19 | 225 | COVID-19 | 1504.877 |
| 2 | Pandemic | 217 | Pandemic | 233 | Pandemic | 1118.561 |
| 3 | Public health | 206 | Public health | 244 | Public health | 984.489 |
| 4 | Mental health | 180 | Mental health | 270 | Mental health | 605.207 |
| 5 | eHealthy | 168 | eHealthy | 282 | eHealthy | 519.168 |
| 6 | Child | 168 | Child | 282 | Child | 532.924 |
| 7 | Health care | 163 | Health care | 287 | Health care | 477.003 |
| 8 | Epidemiology | 156 | Epidemiology | 294 | Epidemiology | 435.209 |
| 9 | Depression | 155 | Depression | 295 | Depression | 398.307 |
| 10 | Anxiety | 153 | Anxiety | 297 | Anxiety | 379.047 |
| 11 | Life satisfaction | 151 | Life satisfaction | 299 | Life satisfaction | 374.755 |
| 12 | Lockdown | 135 | Lockdown | 315 | Infection | 356.884 |
| 13 | Infection | 133 | Infection | 317 | Lockdown | 319.573 |
| 14 | Infectious disease | 132 | Infectious disease | 318 | Prevention | 306.97 |
| 15 | Prevention | 131 | Prevention | 319 | Infectious disease | 253.865 |
| 16 | Aging | 126 | Aging | 324 | Aging | 229.456 |
| 17 | Health | 126 | Health | 324 | Health | 234.61 |
| Cancer | 119 | Cancer | 331 | Cancer | 228.904 | |
| Patient | 115 | Patient | 335 | Mortality | 193.589 | |
| Hospital | 112 | Hospital | 338 | Patient | 168.002 |