Table 2.
DPN domains and facets, item sources, and number of items derived from adult measures, tested in cognitive interview, and retained.
| Domain/Facet | Sourcesb | # of items |
||
|---|---|---|---|---|
| Derived from adult measures | Testing in cognitive interview | Retained after cognitive interview | ||
| Paresthesia | ||||
| Tingling/pins & needlesa | CL,CH,L | 10 | 8 | 5 |
| “Funny” feelingsa | CL,CH,L | 1 | 3 | 2 |
| Creeping/crawlinga | CL,CH | 0 | 1 | 1 |
| Itchinessa | CL,L | 1 | 1 | 1 |
| Squeezing/pressure/tight | CH,L | 4 | 3 | 1 |
| Vibrating | CH | 0 | 3 | 2 |
| Roughc | CH | 0 | 2 | 0 |
| Total paresthesia items | 16 | 21 | 12 | |
| Pain | ||||
| Burninga | CL,CH,L | 7 | 4 | 2 |
| Radiating/shootinga | CL,CH,L | 9 | 4 | 2 |
| Sharp/stabbinga | CL,CH,L | 7 | 3 | 3 |
| Tactile hyperaesthesia | CL,CH,L | 8 | 2 | 1 |
| Throbbing | CH,L | 2 | 1 | 1 |
| Achingc | L | 9 | 2 | 0 |
| Crampingc | L | 5 | 1 | 0 |
| Tenderc | L | 3 | 1 | 0 |
| Total pain items | 50 | 18 | 9 | |
| Anesthesia | ||||
| Numba | CL,CH,L | 15 | 4 | 3 |
| Loss of proprioceptiona,c | CL | 0 | 1 | 0 |
| Loss of balancec | CL,L | 2 | 1 | 0 |
| Immobility/weakness | CL,CH,L | 8 | 3 | 1 |
| Total anesthesia items | 25 | 9 | 4 | |
| Total (all items) | 91 | 48 | 25 | |
a
Concepts included in initial conceptual framework.
b
Concepts confirmed or elicited from: CL = clinician semi-structured interviews; CH = child semi-structured interviews; L = systematic literature review of DPN symptom questionnaires (for adults).
c
Facets not represented in final item pool.