Table 1 Demographics and participant characteristics, by PET scanner.

From: Cortical D1 and D2 dopamine receptor availability modulate methylphenidate-induced changes in brain activity and functional connectivity

 

Scanner 1: HRRT (n = 17)

Scanner 2: PET/CT (n = 19)

t(df), p

Age

  Min-Max

33–64

22–60

–

  Mean ± SD

48.41 ± 9.60

39.31 ± 12.83

2.39(34), 0.023

Sex

  n, Female (%)

7 (41)

6 (32)

0.062(1), 0.801a

BMI

  Min-Max

21–39

21–33

–

  Mean ± SD

27.19 ± 5.09

28.24 ± 3.28

0.74(34), 0.463

IQ

  Min-Max

79–139

97–129

–

  Mean ± SD

122.35 ± 15.80

110.05 ± 11.58

2.64(34), 0.011

Race

  n, White (%)

11 (65)

5 (26)

7.16(3), 0.067a

  n, Black/AA (%)

6 (35)

10 (53)

–

  n, Asian (%)

0 (0)

2 (11)

–

  n, Other (%)

0 (0)

2 (11)

–

  1. BMI body-mass index, IQ intelligence quotient, SD standard deviation.
  2. aχ2 test-statistic.
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