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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 4. CSS Characteristics by Trajectory Class and by Time Point.

Time 1
Mean (SD)
Range		 Time 2
Mean (SD)
Range		 Time 3
Mean (SD)
Range		 Time 4
Mean (SD)
Range
Persistent High 9.33 (.92)
7-10		 8.93 (1.19)
6-10		 8.57 (1.17)
7-10		 8.63 (1.17)
6-10
Persistent Moderate 7.19 (1.30)
5-10		 6.98 (1.10)
5-10		 6.59 (1.14)4-9
 7.07 (1.24)
4-10
Worsening 3.90 (1.20)
1-5		 5.13 (.84)
4-6		 5.57 (.54)
5-6		 6.25 (.89)
5-8
Improving 6.41 (.80)
5-8		 5.44 (1.34)
3-8		 5.15 (1.46)
2-7		 4.71 (1.45)
3-6

Note. CSS represent calibrated autism severity scores on the Autism Diagnostic Observation Schedule.