Item | Item-test correlation | Item-rest correlation | Average Inter-item covariance | Item Alpha |
---|---|---|---|---|
Phq1 | 0.578 | 0.429 | 0.144 | 0.734 |
Phq2 | 0.649 | 0.491 | 0.133 | 0.724 |
Phq3 | 0.619 | 0.440 | 0.135 | 0.734 |
Phq4 | 0.655 | 0.509 | 0.133 | 0.721 |
Phq5 | 0.620 | 0.451 | 0.135 | 0.732 |
Phq6 | 0.602 | 0.465 | 0.142 | 0.723 |
Phq7 | 0.587 | 0.466 | 0.147 | 0.730 |
Phq8 | 0.347 | 0.250 | 0.170 | 0.757 |
Phq9 | 0.546 | 0.420 | 0.150 | 0.736 |
Overall | 0.143 | 0.756 |