Table 1 Subject characteristics of participants in the study

f

c

24

26.84

Pos

f

bl

27

32.16

Pos

m

c

37

24.19

Pos

m

c

27

24.37

Null

m

bl

36

28.47

Null

m

c

27

27.08

Pos

m

hisp

24

29.94

Pos

m

hisp

24

27.15

Null

m

c

23

25.22

Nos

m

bl

23

29.37

Pos

f

c

25

25.66

Null

f

bl

29

38.06

Pos

m

c

30

21.22

Pos

m

c

28

28.94

Null

m

c

25

25.72

nd

11 m/4f

9c/4bl/2hisp

27 ± 4

27.63 ± 3.95

9+/5-