PHQ-9 baseline threshold (%) | PHQ-9 post-treatment threshold (%) | |||||
PHQ-9 score thresholds | Breaking Free Online | Living Life to the Full Interactive | Sleepio | Breaking Free Online | Living Life to the Full Interactive | Sleepio |
Minimal (range 0–4) | 7.7 | 6.9 | 10.6 | 37.6 | 40.5 | 42.4 |
Mild (range 5–9) | 21.4 | 23.1 | 20 | 15.4 | 33.5 | 38.7 |
Moderate (range 10–14) | 20.5 | 40.3 | 44.7 | 22.2 | 15.5 | 11.8 |
Moderately severe (range 15–19) | 26.5 | 24.2 | 18.8 | 11.1 | 7.8 | 2.4 |
Severe (range 20–27) | 23.9 | 5.5 | 5.9 | 13.7 | 2.7 | 4.7 |