Fig 1.
The Healthy Brain 9 (HB9).
Table 1.
Sample characteristics by diagnosis.
Table 2.
HB9 item distributions, inter-item, and item-total correlations.
Table 3.
Concurrent validity of HB9 with clinical, cognitive and biomarker variables.
Table 4.
HB9 performance comparing NCI to SCD participants.
Table 5.
HB9 performance comparing MCI with and without anosognosia.
Table 6.
Receiver operator characteristics curve features of HB9.
Fig 2.
Comparison of HB9 Scores with Research Clinician Global Assessment.
Self-reported subjective cognitive complaints on the HB9 were compared across clinical diagnostic groups (NCI, SCD, MCI with Awareness, and MCI with Anosognosia). Participants with NCI (1.7 ± 1.8) had the lowest HB9 scores while MCI with awareness (7.3 ± 5.8) had the highest HB9 scores. There was no difference in HB9 scores between NCI participants and MCI participants with anosognosia (2.5 ± 4.8), and no difference between SCD (6.1 ± 4.7) and MCI with awareness.