Table:
supplement use
smoking
body mass index

no supplement use
supplement users
smokers
non-smokers
neither overweight nor obese
overweight
obese

beta
p-value
beta
p-value
beta
p-value
beta
p-value
beta
p-value
beta
p-value
beta
p-value

r2
r2: 0.2084
r2: 0.1563
r2: 0.3865
r2: 0.2731
r2: 0.3036
r2: 0.2912
r2: 0.2517

intercept
67.69
0.00
83.50
0.00
70.26
0.00
66.73
0.00
67.45
0.00
61.57
0.00
60.40
0.00

sex

men
-8.38
0.01
-7.27
0.04
-16.87
0.00
-6.12
0.01
-14.41
0.01
-3.06
0.27
-7.59
0.03

women
..
..
..
..
..
..
..
..
..
..
..
..
..
..

age group

20 to 39
-1.69
0.57
-6.28
0.27
3.26
0.65
-4.77
0.06
-5.32
0.18
-1.56
0.75
-3.32
0.37

40 to 59
-3.54
0.21
-0.06
0.98
-2.02
0.74
-3.49
0.11
-5.21
0.26
-1.34
0.65
-5.74
0.16

60 to 79
..
..
..
..
..
..
..
..
..
..
..
..
..
..

education

less than college/university graduation
-5.56
0.00
-2.96
0.41
-0.83
0.86
-6.43
0.01
-8.58
0.01
-3.71
0.27
-1.86
0.48

college/university graduation
..
..
..
..
..
..
..
..
..
..
..
..
..
..

vitamin c-containing supplement use

no
..
..
..
..
..
..
..
..
..
..
..
..
..
..

yes
..
..
..
..
21.54
0.00
16.28
0.00
18.40
0.01
17.89
0.00
13.28
0.00

smoking

daily/occasional
-7.32
0.03
-1.88
0.78
..
..
..
..
-5.14
0.14
-7.42
0.06
-1.35
0.70

non-smoker
..
..
..
..
..
..
..
..
..
..
..
..
..
..

body mass index

neither overweight or obese
..
..
..
..
..
..
..
..
..
..
..
..
..
..

overweight
-3.42
0.27
-6.55
0.31
-3.51
0.50
-5.01
0.05
..
..
..
..
..
..

obese
-9.87
0.00
-18.00
0.01
-5.66
0.32
-13.76
0.00
..
..
..
..
..
..

fruit juice consumption

daily
..
..
..
..
..
..
..
..
..
..
..
..
..
..

at least once a month
-1.22
0.56
-1.51
0.75
-9.80
0.03
0.60
0.78
2.09
0.53
-3.00
0.32
-5.80
0.08

less than once a month or never
-6.27
0.12
-0.89
0.90
-17.59
0.03
-3.42
0.17
-3.31
0.41
-5.40
0.20
-11.52
0.00

citrus fruit consumption

at least once a week
..
..
..
..
..
..
..
..
..
..
..
..
..
..

less than once a week
-8.01
0.00
-2.98
0.47
-14.06
0.01
-4.82
0.04
-0.87
0.75
-12.24
0.00
-7.27
0.02

Statement: in all multivariate models except the overweight population, men had significantly lower vitamin c concentrations than did women.
Question: in all multivariate models except the overweight population, which gender had significantly lower vitamin c concentrations, men or women?
Answer: men