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Table 4 Mean ± SD tracking measures by group and t -test (separate variance estimates; df = 38)

From: Rating scale measures are associated with Noldus EthoVision-XT video tracking of behaviors of children on the autism spectrum

 

ASD

Not-ASD

t

P

Parent Latency (sec)

53.8 (9.2)

21.5 (10.1)

2.5

0.02

Percent Time in Parent ROI

26.2 (4.5)

31.1 (8.2)

−0.5

0.59

Periphery Latency (sec)

55.1 (10.1)

60.9 (11.4)

−0.4

0.70

Percent Time in Periphery ROI

27.6 (4.8)

14.6 (4.2)

2.1

0.04

Turning Bias*

    

RAV1 (°/sec)

−2.8 (3.2)

−13.0 (14.6)

0.7

0.49

RAV2 (°/sec)

12.5 (3.6)

−15.3 (7.3)

3.6

0.00

RAV Mean (°/sec)

4.9 (2.2)

−14.1 (8.4)

2.3

0.04

  1. *Mann–Whitney: U = 144, P = 0.86 for RAV1; U = 44, P = 0.001 for RAV2; and U = 80, P = 0.03 for RAV Mean.