Table 2 Summary of EDI scale fit to the Rasch model
From: The Early Development Instrument: an evaluation of its five domains using Rasch analysis
Scale | Item residual Mean (SD) | Person residual Mean (SD) | Chi square Value | p | PSI with extremes | PSI without extremes |
|---|---|---|---|---|---|---|
Physical health and well-being | −1.28 (5.51) | −0.39 (1.00) | 813.82 | <0.001 | 0.62 | 0.65 |
Social competence | −1.46 (3.53) | −0.43 (1.46) | 658.53 | <0.001 | 0.87 | 0.90 |
Emotional maturity | −0.87 (4.19) | −0.43 (1.33) | 1678.47 | <0.001 | 0.88 | 0.88 |
Language and cognitive development | −1.86 (1.76) | −0.41 (0.57) | 382.94 | <0.001 | 0.72 | 0.78 |
Communication skills and general knowledge | −1.78 (5.57) | −0.47 (1.31) | 372.98 | <0.001 | 0.83 | 0.85 |