Table 3.
Item-item correlation matrix of the 16 items retained following item reduction and factor analysis in the item generation component of the study
| Abnsens | Phlegm | Pain | Stuck | Blocked | Dry | Tight | Irritation | Pushing on chest | Pressing on throat | Constriction | Food catches | Tickle | Itch | Tingle | Hot burning | No. (%) correlation < .2 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Abnormal sensation |
1 |
0.298 |
0.307 |
0.707 |
0.621 |
0.114 |
0.644 |
0.569 |
0.087 |
0.523 |
0.344 |
0.399 |
0.448 |
0.337 |
0.414 |
0.184 |
3 (19) |
| Phlegm |
0.298 |
1 |
0.092 |
0.299 |
0.259 |
0.184 |
0.187 |
0.296 |
0.211 |
0.080 |
0.309 |
0.169 |
0.491 |
0.395 |
0.361 |
0.035 |
6 (38) |
| Pain |
0.307 |
0.092 |
1 |
0.304 |
0.299 |
0.401 |
0.405 |
0.338 |
0.449 |
0.414 |
0.219 |
0.219 |
0.317 |
0.493 |
0.545 |
0.637 |
1 (6) |
| Stuck |
0.707 |
0.299 |
0.304 |
1 |
0.723 |
0.010 |
0.649 |
0.665 |
0.130 |
0.617 |
0.406 |
0.457 |
0.471 |
0.368 |
0.484 |
0.059 |
3 (19) |
| Blocked |
0.621 |
0.259 |
0.299 |
0.723 |
1 |
0.099 |
0.729 |
0.617 |
0.301 |
0.687 |
0.614 |
0.531 |
0.462 |
0.304 |
0.489 |
0.182 |
2 (13) |
| Dry |
0.114 |
0.184 |
0.401 |
0.010 |
0.099 |
1 |
0.354 |
0.230 |
0.445 |
0.070 |
0.149 |
0.346 |
0.454 |
0.404 |
0.329 |
0.373 |
6 (38) |
| Tight |
0.644 |
0.187 |
0.405 |
0.649 |
0.729 |
0.354 |
1 |
0.714 |
0.493 |
0.802 |
0.588 |
0.529 |
0.488 |
0.461 |
0.505 |
0.346 |
1 (6) |
| Irritated |
0.569 |
0.296 |
0.338 |
0.666 |
0.617 |
0.230 |
0.714 |
1 |
0.292 |
0.529 |
0.315 |
0.485 |
0.517 |
0.314 |
0.386 |
0.168 |
1 (6) |
| Pushing On chest |
0.087 |
0.211 |
0.449 |
0.130 |
0.302 |
0.445 |
0.493 |
0.292 |
1 |
0.454 |
0.410 |
0.114 |
0.414 |
0.384 |
0.313 |
0.621 |
3 (19) |
| Pressing on throat |
0.523 |
0.080 |
0.414 |
0.617 |
0.687 |
0.070 |
0.802 |
0.529 |
0.454 |
1 |
0.664 |
0.482 |
0.220 |
0.413 |
0.607 |
0.342 |
2 (13) |
| Constriction |
0.344 |
0.309 |
0.219 |
0.406 |
0.614 |
0.149 |
0.588 |
0.315 |
0.410 |
0.664 |
1 |
0.379 |
0.323 |
0.377 |
0.418 |
0.218 |
1 (6) |
| Food catches |
0.399 |
0.169 |
0.219 |
0.457 |
0.531 |
0.346 |
0.529 |
0.485 |
0.114 |
0.482 |
0.379 |
1 |
0.241 |
0.516 |
0.485 |
0.161 |
3 (19) |
| Tickle |
0.448 |
0.491 |
0.317 |
0.471 |
0.462 |
0.454 |
0.488 |
0.517 |
0.414 |
0.220 |
0.323 |
0.241 |
1 |
0.542 |
0.489 |
0.185 |
1 (6) |
| Itch |
0.337 |
0.395 |
0.493 |
0.368 |
0.304 |
0.404 |
0.461 |
0.314 |
0.384 |
0.413 |
0.377 |
0.516 |
0.542 |
1 |
0.725 |
0.310 |
0 (0) |
| Tingle |
0.415 |
0.361 |
0.545 |
0.484 |
0.489 |
0.329 |
0.505 |
0.386 |
0.313 |
0.607 |
0.418 |
0.485 |
0.489 |
0.725 |
1 |
0.364 |
0 (0) |
| Hot burning | 0.184 | 0.035 | 0.637 | 0.059 | 0.183 | 0.373 | 0.346 | 0.168 | 0.621 | 0.342 | 0.218 | 0.161 | 0.185 | 0.310 | 0.364 | 1 | 7 (44) |
(N = 38, group 1).