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Agreement between measures of family income, neighbourhood income and material deprivation
| Weighted kappa (95% CI) | |
| Family income and neighbourhood income | 0.25 (0.24 to 0.27) |
| Family income and material deprivation | 0.28 (0.26 to 0.30) |
| Neighbourhood income and material deprivation | 0.51 (0.50 to 0.53) |
