Figure 1.

Demographic information about participants in the study
| Number of participants | 253 |
| % Female | 58.9 |
| % Male | 41.1 |
| % Diagnosed with depression | 25.3 |
| NDDI-E Age groups (%): | |
| < 21 years | 8.7 |
| 21–35 years | 51.8 |
| 36–50 years | 24.1 |
| 51–65 years | 11.1 |
| > 65 years | 4.3 |
| Years of treatment (SD) | 16.8 (12) |
| Number of seizures (SD) | 1.8 (1.6) |
Inter-item, corrected item-total correlations and factor loadings of NDDI-E (N = 253)
| NDDI-E ITEM | 1 | 2 | 3 | 4 | 5 | 6 | Corrected Item-total correlations | CFA Factor loadings |
|---|---|---|---|---|---|---|---|---|
| 1 | 1.000 | 0.495 | 0.544 | |||||
| 2 | 0.469 | 1.000 | 0.595 | 0.650 | ||||
| 3 | 0.411 | 0.518 | 1.000 | 0.684 | 0.777 | |||
| 4 | 0.252 | 0.381 | 0.491 | 1.000 | 0.530 | 0.603 | ||
| 5 | 0.354 | 0.382 | 0.518 | 0.464 | 1.000 | 0.609 | 0.685 | |
| 6 | 0.387 | 0.456 | 0.558 | 0.412 | 0.539 | 1.000 | 0.643 | 0.724 |