Trastorno específico del lenguaje en Andalucía, España: prevalencia en función del subtipo y del género

Introduction

Specific Language Impairment (SLI) is a significant impairment in language acquisition (−1.25 SD), resistant to intervention and not justified by physical, neurological, intellectual, sensory or social causes, requiring specialized intervention. There is little information on the prevalence of this group in Spain.

Objectives

Three objectives, to calculate the prevalence of SLI in general and subtypes globally and according to gender, to determine the ages of diagnosis of SLI and to know its distribution by provinces in Andalusia.

Materials and methods

Prevalence: Reference population: 537,879 Primary School students. The prevalence is calculated by types, provinces and sex and homogeneity with hierarchical cluster is analyzed. Detection ages and SLI allocation in Andalusia: Reference population: 1,185,061 students. Frequencies and percentages of SLI are calculated by typology, province, age group and sex. Classification tree technique (CHAID method) is used.

Results

Prevalence: 8.27 per thousand (‰) in Andalusia (Spain). Screening ages. At age 8, 86.9%, mainly expressive SLI (E-SLI). Semantic-pragmatic disorder (SPD) is detected mainly from the age of 8 years.

Distribution

Sex: 74% are boys. Age groups: 2.9% are between 3-6 years old, 32% between 6 and 8, 42% between 8 and 12 and 23% over 12. Typologies: expressive SLI (E-SLI): 56%, expressive-receptive SLI (ER-SLI): 33% and semantic-pragmatic disorder (SPD): 11%.

Conclusions

SLI students, due to their specific characteristics and dimensions, should be considered in educational policies.