Table 2

Distribution of participants with number of visits and/or measurements of the same child at different agesa

Population

HRA

CON


Number of infants with one time point

Age 6 months

2

6

Age 9 months

5

2

Age 12 months

4

4

Age 18 months

5

2

Age 24 months

5

3

Total

21

24

Number of infants with two time points

16

8

Number of infants with three time points

8

5

Number of infants with four time points

0

2

Number of infants with five time points

1

1

Total unique infants

46

33

Total measurements, all visits

82

61


aOverall, 79 infants participated in the study, and 143 measurement sessions were conducted. HRA, high risk for autism; CON, controls.

Bosl et al. BMC Medicine 2011 9:18   doi:10.1186/1741-7015-9-18

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