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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: J Autism Dev Disord. 2014 Mar;44(3):546–563. doi: 10.1007/s10803-013-1903-y

Table 5. Intercepts and Slopes of Functional Skill Trajectories by Autism Severity Trajectory Class.

Persistent
High
(n = 47)		 Persistent
Moderate
(n = 54)		 Worsening

(n = 10)		 Improving

(n = 18)
Mullen Developmental Quotient
    Intercept 70.79 76.46 84.31 83.18
    Slope −1.11 0.29 0.18 1.02
Vineland-II Daily Living Skills
Standard Score
    Intercept 76.28 82.97 83.08 84.76
    Slope −0.89 −0.44 0.49 0.56
PLS-4 Auditory Comprehension
Standard Score
    Intercept 56.64 58.15 67.24 65.97
    Slope 3.66 6.88 12.78 10.93
PLS-4 Expressive Communication
Standard Score
    Intercept 69.58 71.61 72.52 74.84
    Slope −2.04 1.64 8.29 8.20

Note. PLS-4 indicates the Preschool Language Scale, 4th Edition.