Table 2.
Unadjusted comparisons of WISC-IV, Conner, and NEPSY scale standardized scores.
| WISC-IV Scores | Statistic | N | Extremely Preterm born | N | Term-born | P-value |
|---|---|---|---|---|---|---|
| Verbal Comprehension | Mean (SD) | 110 | 89.9 (14.5) | 29 | 103.1 (11.8) | <0.01 |
| Median | 91 (79, 100) | 102 (95, 110) | ||||
| Min, Max | 53, 121 | 83, 130 | ||||
| Perceptual Reasoning | Mean (SD) | 110 | 96.4 (16.4) | 29 | 111.8 (13.8) | <0.01 |
| Median | 95 (86, 108) | 110 (100, | ||||
| Min, Max | 63, 141 | 84, 145 | ||||
| Working Memory Total | Mean (SD) | 109 | 91.6 (12.7) | 29 | 105.1 (13.4) | <0.01 |
| Median | 94 (83, 102) | 102 (94, 113) | ||||
| Min, Max | 54, 120 | 86, 132 | ||||
| Processing Speed | Mean (SD) | 109 | 91.6 (16.7) | 29 | 105.7 (11.9) | <0.01 |
| Median | 94 (80, 103) | 106 (100, | ||||
| Min, Max | 50, 128 | 75, 123 | ||||
| NEPSY-II | ||||||
| Auditory attention total correct | Mean (SD) | 96 | 8.1 (3.8) | 27 | 10.5 (3.0) | <0.01 |
| Median | 9 (5, 11) | 11 (8, 13) | ||||
| Min, Max | 1, 14 | 4, 15 | ||||
| Auditory attention combined | Mean (SD) | 96 | 7.9 (4.0) | 27 | 10.9 (3.5) | <0.01 |
| Median | 8 (4, 11) | 11 (9, 13) | ||||
| Min, Max | 1, 16 | 4, 18 | ||||
| Memory for names immediate | Mean (SD) | 103 | 8.5 (3.3) | 29 | 10.7 (3.2) | <0.01 |
| Median | 8 (7, 11) | 11 (8, 12) | ||||
| Min, Max | 1, 19 | 5, 18 | ||||
| Memory for names delayed total | Mean (SD) | 103 | 8.5 (3.5) | 29 | 10.7 (3.3) | <0.01 |
| Median | 9 (7, 11) | 11 (10, 12) | ||||
| Min, Max | 2, 17 | 2, 17 | ||||
| Conners Scores | ||||||
| Inattention | Mean (SD) | 102 | 66.2 (17.3) | 27 | 51.8 (14.0) | <0.01 |
| Median | 63 (55, 85) | 45 (41, 56) | ||||
| Min, Max | 40, 90 | 40, 90 | ||||
| Hyperactivity/Impulsivity | Mean (SD) | 101 | 66.0 (17.0) | 28 | 56.4 (14.8) | <0.01 |
| Median | 64 (52, 83) | 52 (45, 64) | ||||
| Min, Max | 40, 90 | 40, 90 | ||||
| Learning Problems | Mean (SD) | 104 | 57.3 (13.9) | 26 | 47.2 (9.8) | <0.01 |
| Median | 57 (46, 64) | 45 (40, 50) | ||||
| Min, Max | 40, 90 | 40, 90 | ||||
| Executive Functioning | Mean (SD) | 105 | 58.9 (14.4) | 26 | 51.1 (10.3) | 0.01 |
| Median | 54 (47, 69) | 49 (43, 58) | ||||
| Min, Max | 40, 90 | 40, 90 | ||||
| Defiance/Aggression | Mean (SD) | 106 | 55.3 (13.3) | 29 | 48.4 (5.5) | 0.01 |
| Median | 49 (45, 60) | 46 (45, 50) | ||||
| Min, Max | 44, 90 | 45, 68 | ||||
| Peer Relations | Mean (SD) | 105 | 57.4 (14.9) | 29 | 51.5 (11.6) | 0.03 |
| Median | 52 (46, 64) | 46 (45, 54) | ||||
| Min, Max | 44, 90 | 45, 89 | ||||