title: The effect of sex, social class and parity on achievement of Denver developmental screening test items in the first year of life.
mesh_terms: D000124:Achievement; D000367:Age Factors; D002658:Developmental Disabilities / Q000175:diagnosis*; D005260:Female; D006801:Humans; D007086:Illegitimacy; D007223:Infant; D007231:Infant, Newborn; D008607:Intellectual Disability / Q000175:diagnosis; D007806:Language Disorders / Q000175:diagnosis; D008297:Male; D008403:Mass Screening; D009048:Motor Skills; D009069:Movement Disorders / Q000175:diagnosis; D010554:Personality Disorders / Q000175:diagnosis; D011581:Psychological Tests / Q000592:standards*; D012737:Sex Factors; D012923:Social Class; D014852:Wales