“…Previous studies reported that several factors may be involved with speech and language impairment, including male [24], perinatal factors [23, 24], hearing status [24, 26], medical conditions [30, 31], multiple birth [33, 34], oral sucking habits [35], temperament [36], family history of speech and language problems [37, 38], educational level of mother and father [39], parental mental health [40], maternal age at birth of child [33], birth order [41, 42], and neighborhood disadvantage [42, 43]. Mental handicap [26, 27], autism [25, 26], and attention deficit hyperactivity disorder [29] were also related to speech and language impairment.…”