Table 1.

The number and average age of children in each assessment

	Number of children	Average age (mo)
Total number of children	1,102 (100)	41.64±11.95
Sex
Male	832 (75.50)	41.83±12.34
Female	270 (24.50)	43.37±13.38
Visual motor integration	391 (35.48)	43.87±12.59
Social maturity scale	476 (43.19)	39.09±11.93
Korean–Wechsler Preschool and Primary Scale of Intelligence	78 (7.08)	40.61±12.13
Korean Childhood Autism Rating Scale	305 (27.68)	42.60±10.96
Hearing test	253 (22.96)	41.92±14.96

Values are presented as number of children (%) or mean±standard deviation.