Table 2.
Agreement between NDDS and BSID-III-based indicators of delay for children aged 3 and under (Group A; n = 594)
| Mild delay | Severe delay | |||||||
|---|---|---|---|---|---|---|---|---|
| Published norms | Distribution-based cut-points | Published norms | Distribution-based cut-points | |||||
| 1+ | 2+ | 1+ | 2+ | 1+ | 2+ | 1+ | 2+ | |
| True negative | 328 | 423 | 283 | 368 | 364 | 485 | 352 | 467 |
| False negative | 42 | 70 | 87 | 125 | 6 | 8 | 18 | 26 |
| False positive | 162 | 67 | 136 | 51 | 212 | 91 | 197 | 82 |
| True positive | 61 | 33 | 88 | 50 | 11 | 9 | 27 | 19 |
| Sensitivity (%) (95 % CI) | 59 (49–69) | 32 (23–42) | 50 (43–58) | 29 (22–36) | 65 (38–86) | 53 (28–77) | 60 (44–74) | 42 (28–58) |
| Specificity (%) (95 % CI) | 67 (62–71) | 86 (83–89) | 68 (63–72) | 88 (84–91) | 63 (59–67) | 84 (81–87) | 64 (60–68) | 85 (82–88) |
| PPV (%) (95 % CI) | 27 (22–34) | 33 (24–43) | 39 (33–46) | 50 (39–60) | 5 (2–9) | 9 (4–16) | 12 (8–17) | 19 (12–28) |
| NPV (%) (95 % CI) | 89 (85–92) | 86 (82–89) | 76 (72–81) | 75 (71–78) | 98 (97–99) | 98 (97–99) | 95 (92–97) | 95 (92–97) |
Note: PPV Positive Predictive Value, NPV Negative Predictive Value