Table 9.
Principal-Component Factor Loadings for the 19 Predictors.
| PC1 Spectrum audibility deficits | PC2 Hearing-aid settings | PC3 Baseline hearing ability | PC4 Cochlear gain loss | PC5 Aging and cognition | PC6 Temporal processing deficits | PC7 Cochlear compression | |
|---|---|---|---|---|---|---|---|
| Age | 0.68 | ||||||
| PTT | 0.44 | ||||||
| SRTQ | 0.37 | 0.34 | |||||
| HLOHC | 0.32 | ||||||
| HLIHC | 0.42 | −0.32 | |||||
| BMCE | 0.60 | ||||||
| DPOAEN | 0.40 | ||||||
| DPOAEµPa | 0.58 | ||||||
| FMDT | 0.77 | ||||||
| FMRR | 0.59 | ||||||
| TI | 0.61 | ||||||
| REIG50dB | 0.60 | ||||||
| REIG65dB | 0.61 | ||||||
| RECEHI | −0.30 | −0.44 | |||||
| RSpan | −0.33 | −0.53 | |||||
| SSQ-speech | 0.42 | −0.43 | |||||
| SSQ-spatial | 0.60 | ||||||
| SSQ-qualities | 0.55 | ||||||
| SIIQ | −0.51 |
Note. Loadings < 0.3 are omitted. For detailed information, see Appendix A. PTT = pure tone threshold; SRT = speech reception threshold; HLOHC = outer hair cell loss; HLIHC = inner hair cell loss; BMCE = basilar membrane compression exponent; DPOAE = distortion product otoacoustic emission; BMLD = binaural-masking level difference; FMDT = frequency-modulation detection threshold; FMRR = forward-masking recovery rate; TI = temporal integration; REIG = real-ear insertion gain; SSQ = speech, spatial, and qualities; SIIQ = speech intelligibility index in quiet; RECE = real-ear compression exponent; PC = principal component.