Table 6.
Participant characteristics across samples
|
n = 490 Main sample |
n = 97 Missing data on symptom severity |
n = 393 Multiple imputation sample |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| n | (%) | Mean (SD) | n | (%) | Mean (SD) | n | (%) | Mean (SD) | |
| Sex | |||||||||
| Male | 377 | (76.9) | 71 | (73.2) | 306 | (77.9) | |||
| AOW (months) | 490 | 14.5 (4.0) | 97 | 15.1 (5.2) | 393 | 14.4 (3.7) | |||
| Age (years) at inclusion | 490 | 11.1 (3.7) | 97 | 9.3 (4.1) | 393 | 11.5 (3.5) | |||
| Verbal language | 405 | (94.4) | 30 | (76.9) | 375 | (96.2) | |||
| Nonverbal IQ | 339 | 101.9 (17.7) | 14 | 94.4 (16.8) | 325 | 102.2 (17.6) | |||
| Verbal IQ | 344 | 90.1 (17.9) | 15 | 82.2 (14.2) | 329 | 90.4 (18.0) | |||
| Paternal age (years) | 282 | 32.6 (6.3) | 28 | 32.7 (6.6) | 254 | 32.6 (6.3) | |||
| Prematurity | 65 | (15.0) | 18 | (23.1) | 47 | (13.2) | |||
| Ethnicity | |||||||||
| European (Caucasian) | 379 | (83.1) | 56 | (60.2) | 323 | (89.0) | |||
Data are expressed as n (%) or mean (SD). The denominator for proportions reported in this table excludes those with missing data. Nonverbal IQ was obtained from various age-appropriate standardized tests
AOW age for onset of independent walking, ASD autism spectrum disorder