1 | Normal: no clinically apparent neurodevelopmental abnormality causing functional disability |
2 | Mild disability: for example, myopia, language delay, mild hearing loss, hyperactivity, or motor clumsiness |
3 | Moderate disability: for example, spastic diplegia, hemiplegia, or moderate learning disability (developmental quotient 50–69) |
4 | Severe disability: for example, spastic quadriplegia, blindness, deafness (loss of 70 decibel or more), uncontrolled epilepsy, or severe learning disability (developmental quotient <50). Infants with multiple disabilities |
Groups 3 and 4 can be considered together as major disability.