Table 3 Agreement between NDDS and composite indicators of delay for children over 3 (Group B; n = 211)
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 | 107 | 143 | 97 | 130 | 116 | 162 | 114 | 158 |
False negative | 13 | 25 | 23 | 38 | 4 | 6 | 6 | 10 |
False positive | 64 | 28 | 57 | 24 | 83 | 37 | 80 | 36 |
True positive | 27 | 15 | 34 | 19 | 8 | 6 | 11 | 7 |
Sensitivity (%) (95 % CI) | 68 (51–81) | 38 (23–54) | 60 (46–72) | 33 (21–47) | 67 (35–90) | 50 (21–79) | 65 (38–86) | 41 (18–67) |
Specificity (%) (95 % CI) | 63 (70–55) | 84 (89–77) | 63 (71–55) | 84 (90–78) | 58 (65–51) | 81 (87–75) | 59 (66–51) | 81 (87–75) |
PPV (%) (95 % CI) | 30 (21–40) | 35 (21–51) | 37 (27–48) | 44 (29–60) | 9 (4–17) | 14 (5–28) | 12 (6–21) | 16 (7–31) |
NPV (%) (95 % CI) | 89 (94–82) | 85 (90–79) | 81 (87–73) | 77 (83–70) | 97 (99–92) | 96 (99–92) | 95 (98–89) | 94 (97–89) |