Table 4.
Most common KT clue expressions
| Analysis Clue | Freq | Investigation Clue | Freq | Observation Clue | Freq |
| suggest | 408 | examined | 207 | found | 361 |
| show | 353 | investigated | 205 | observed | 226 |
| demonstrate | 335 | analyzed | 119 | detected | 141 |
| demonstrated | 332 | studied | 94 | detectable | 48 |
| showed | 246 | to determine | 50 | seen | 32 |
| shown | 244 | tested | 39 | noted | 17 |
| may | 242 | measured | 25 | find | 11 |
| can | 232 | monitored | 25 | detect | 11 |
| associated | 215 | to investigate | 23 | findings | 11 |
| indicate | 211 | to examine | 21 | observations | 9 |
| revealed | 196 | to study | 21 | finding | 9 |
| suggesting | 140 | analysis | 20 | show | 6 |
| report | 114 | studies | 20 | report | 6 |
| identified | 112 | to identify | 16 | exhibit | 5 |
| thus | 108 | investigate | 15 | ||