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Table 2 Frequencies: language status at 4 years vs. 18 to 20 months, and family history

From: Parental phonological memory contributes to prediction of outcome of late talkers from 20 months to 4 years: a longitudinal study of precursors of specific language impairment

Language status at 18-20 months Language status at 4 years, n (%) Total, n
  TD SLI LNV  
AT, no FHa 34 (91.9) 3 (8.1) 2 (5.1) 39
AT + FH 11 (68.8) 5 (31.3) 3 (15.8) 19
LT, no FH 11 (73.3) 4 (26.7) 2 (11.8) 17
LT + FH 4 (57.1) 3 (42.9) 0 (0) 7
Total 60 15 7 76
  1. aAbbreviations: AT, average talker; FH, family history; LNV, low nonverbal; LT, late talker; SLI, specific language impairment; TD, typical development.