Academic underachievement: number of children underachieving (percentages in parentheses)
| Group | |||||
|---|---|---|---|---|---|
| CHD | BMT | Healthy | |||
| Cyanotic | Acyanotic | Total | |||
| Initial assessment | |||||
| Arithmetic underachievement | 1 (8) | 3 (13) | 4 (11) | 9 (22) | 11 (28) |
| Reading underachievement | 2 (17) | 7 (29) | 9 (25) | 13 (37)a | 7 (18)a |
| Reading problems | 4 (33) | 2 (8) | 6 (17) | 12 (34) | 3 (8) |
| Follow up assessment | |||||
| Arithmetic underachievement | 1 (10) | 7 (33) | 8 (26) | 8 (35) | 8 (27) |
| Reading underachievement | 2 (25) | 5 (25) | 7 (25) | 9 (39)b | 3 (10)b |
| Reading problems | 4 (50)c d | 1 (5)c e | 5 (18) | 9 (39)e f | 3 (10)d f |
95% Confidence interval of differences between means for data with the same superscript letter: a: −0.0080 to 0.392, p = 0.01; b: −0.0648 to 0.518, p = 0.03; c: 0.0906 to 0.809, p = 0.02; d: 0.0373 to 0.763, p = 0.04; e: −0.5620 to −0.120, p = 0.02; f: 0.0648 to 0.518, p = 0.03.