Sensitivity and specificity of Griffiths scores for predicting outcome on the Movement ABC and the WPPSI
| Predictor variable | Outcome measure | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|
| PPV, positive predictive value; NPV, negative predictive value. | |||||
| 1 year DQ | Movement ABC | 27/42 (64%) | 37/37 (100%) | 27/27 (100%) | 37/52 (71%) |
| 2 year DQ | Movement ABC | 22/33 (67%) | 32/32 (100%) | 22/22 (100%) | 32/43 (74%) |
| 1 year DQ | Full Scale IQ | 25/33 (76%) | 43/44 (98%) | 25/26 (96%) | 43/51 (84%) |
| 2 year DQ | Full Scale IQ | 27/30 (90%) | 38/39 (97%) | 27/28 (96%) | 38/41 (93%) |