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. Author manuscript; available in PMC: 2023 Dec 11.
Published in final edited form as: Int J Speech Lang Pathol. 2020 Mar 12;22(5):549–558. doi: 10.1080/17549507.2019.1702719

Table III.

Pre-intervention characteristics by treatment condition and rate of speaking grouping.

Treatment condition
EMT + PE BAU
Variable Low-rate (<10 words per min) High-rate (>10 words per min) Low-rate (<10 words per min) High-rate (>10 words per min)
Age (months) 20.50 (4.93) [13, 30] 28.40 (3.85) [25, 33] 21.80 (7.84) [15, 35] 28.60 (3.85) [24, 34]
Parent report vocabulary (CDI raw) 54.60 (62.72) 314.80 (179.26) 163.40 (251.34) 405.25 (260.27)
Number different words (PCX) 5.80 (4.12) 28.60 (16.10) 8.20 (8.93) 38.80 (10.40)
Words per minute (PCX) 3.54 (3.06) 13.30 (1.45) 3.36 (2.94) 13.77 (2.56)
Pre-intervention total PCC (PEEPS) 18.70 (12.92) 41.60 (19.11) 33.8 (16.69) 55.2 (13.33)
Pre-intervention consonant inventory (PEEPS) 4.40 (4.27) 12.60 (5.31) 6.40 (6.22) 19.60 (4.16)

Note. Mean (standard deviation). [minimum, maximum]. EMT + PE: Enhanced Milieu Teaching with Phonological Emphasis; BAU: business as usual; CDI: MacArthur-Bates Communicative Development Inventory (Fenson et al., 2007); PCX: parent–child interaction; PCC: total percent consonants correct; PEEPS: profiles of early expressive phonology (Stoel-Gammon & Williams, 2013).