Table 1 Demographics for expression data

From: Increasing BMI is associated with reduced expression of P-glycoprotein (ABCB1 gene) in the human brain with a stronger association in African Americans than Caucasians

Demographics of the study population

All (n=U5)

AA (n=83)

CAUC (n=62)

P-value

BMI

 Mean (kg m2)

30.44

32.65

27.48

0.000428

Female

31.84

   

Male

29.79

  

0.2829

 Underweight (n) (BMI<18)

4

3

1

 

 Normal weight (n) (BMI18–25)

39

19

20

 

 Overweight (n) (BMI 25–30)

41

20

21

 

 Obese (n) (BMI>30)

61

41

20

 

Age

 Mean (years)

41.88

40.76

43.38

0.3054

 Young adult (n) (age18–35)

54

32

22

 

 Middle aged (n) (age 35–30)

43

25

18

 

 Elderly adults (n) (age>50)

48

26

22

 

 Age >60 years (n)

17

9

8

 

Sex

 Female

46

31

15

 

 Male

99

52

47