Table 2 Item-scale correlation: convergent and discriminative validity of FBIS (n = 1478)
Scales | Range of correlation coefficients | Convergent validity test | Discriminative validity test | |||
|---|---|---|---|---|---|---|
Convergent | Discriminative | No. succeed/ | Successful | No. succeed/ | Successful | |
Validity | Validity | No. tested | Ratio (%) | No. tested | Ratio (%) | |
Financial burden | 0.61-0.81 | 0.33-0.67 | 6/6 | 100 | 29/30 | 96.67 |
Disruption of family routine activities | 0.67-0.81 | 0.38-0.73 | 5/5 | 100 | 24/25 | 96.00 |
Disruption of family leisure | 0.80-0.88 | 0.47-0.74 | 4/4 | 100 | 20/20 | 100 |
Disruption of family interactions | 0.71-0.86 | 0.47-0.68 | 5/5 | 100 | 25/25 | 100 |
Effect on physical health of others | 0.81-0.81 | 0.39-0.72 | 2/2 | 100 | 10/10 | 100 |
Effect on mental health of others | 0.78-0.78 | 0.46-0.71 | 3/3 | 100 | 15/15 | 100 |