Table 1

BMI (or weight), smoking status, and vitamin C intake of participants involved in studies included in the meta-analysis

Measured Vitamin C intake (mg/d)


Study

BMI/Weight (kg)

Smoking Status

DR/WR/FR

FFQ


1. Bingham et al., 1995 [12]

NR

NR

87 (56)

122 (53)

Taken from 1994

2. Block et al., 2001 [33]

Wt = 82.6 (11.0)

non-smoker

NR

NR

3. Boeing et al., 1997 [34]

NR

adjusted for smoking

NR

NR

4. Bolton-Smith et al., 1991 [28]

non-smoker

both gender

25.8 (3.2)

61.1 (24.8)

5. Chiplonkar et al., 2002 [35]

NR

NR

NR

Men

BMI = 20.8 (3.3)

Women

BMI = 20.8 (3.9)

6. Costa de Carvalho et al., 1996 [36]

NR

Men

BMI = 24.8 (3.5)

88 (79)

Women

BMI = 22.4 (3.4)

83 (77)

7. Cooney et al., 1995 [37]

NR

Non-smoker

NR

NR

8. Drewnowski et al., 1997 [15]

NR

NR

NR

Men

BMI = 24.4

Women

BMI = 22.6

9. EPIC group of Spain, 1997 [38]

DH

Men

NR

NR

100.9 (50.1)

116.4 (86)

Women

110.8 (57)

121.9 (72.3)

10. Faruque et al., 1995 [39]

both gender

20.0 (0.4)

Non-smoker

83.4 (7.5)

------

11. Hudiburgh et al., 1979 [40]

Women

NR

NR

140 (148)

------

12. Jacques et al., 1993 [41]

Men

NR

NR

------

256 (154)

Women

221 (154)

13. Katsouyanni et al., 1997 [42]

Men

non-smoker

170.3 (59.1)

304.8 (145.5)

Women

145.7 (44.7)

327.5 (170.1)

14. Lori et al., 1998 [43]

Men

73.1

Women

75.2

15. Malekshah et al., 2006 [44]

Men

24.0 (3.9)

NR

45 (21)

89 (54)

Women

26.5 (5.8)

37 (24)

69 (42)

16. McKeowen et al., 2001 [45]

Men

27 (3)

NR

77 (34)

111 (41)

Women

25 (4)

95 (48)

132 (65)

17. Palli et al., 1999 [46]

*

adjusted for smoking

Men

------

92.7 (2.0)

Women

95.4 (2.2)

18. Porrini et al., 1995 [47]

21.1 (2.7)

Non-smoker

both gender

86.4 (39.7)

108.7 (49.2)

19. Riemersma et al., 2000 [48]

26.1 (0.3)

adjusted for smoking

------

54.8 (1.8)

20. Rousseau et al. 2004 [49]

2.4 (2.5)

Non-smoker

------

21. Schroder et al., 2001 [50]

both gender

22.4 (2.9)

8% smoker

105 (100)

267 (182)

22. Simon et al., 2001 [2]

25.5–26.6

Adjusted

------

23. Sinha et al., 1992 [51]

Wt = 80.9 (1.34) kg

Non-smoker

------

155 (11.0)

24. Tusgane et al., 1998 [52]

Adjusted for smoking

55.7

25. Wright et al., 1995 [53]

Normal population

Smoker and non-smoker

Men

66 (5)

Women

72 (5)


*317 subject < 23.4, 322 subjects 23.4–26.3, 306 subjects > 26.3

NR not reported NA not available DH dietary history

Dehghan et al. Nutrition Journal 2007 6:41   doi:10.1186/1475-2891-6-41

Open Data