Total dairy and all-cause mortality or survival.

Data about 11 different cohorts was found, including 11,740 deaths.

Use of data: For the overall analysis, results from 3 articles were not included. Data about these 3 articles can be found in the "extended version of the table". About the 3 excluded articles:

  • Trichopoulou A (2003). Examined 22.043 subjects aged 20-86 from The Greek part of The EPIC Study, which included 275 deaths.
  • Trichopoulou A (2006). Examined 1,013 subjects with diabetes mellitus from The Greek part of The EPIC Study, which included 80 deaths.
  • Trichopoulou A (2009). Examined 23,349 subjects aged 20-86 from the Greek part of The EPIC Study, which included 1,075 deaths.

Reason for exclusion in this analysis is as follows:
In 2005 Trichopoulou published results from the EPIC-Elderly Study, examining subjects aged ≥ 60 from 9 European countries, and including data from EPIC-Greece. Most deaths from the first- (2003) and last (2009) publication about The Greek part of The EPIC Study will probably have occured among subjects aged ≥ 60, and therefore inclusion of the data would have led to using the same data twice. In addition, subjects with a history of diabetes mellitus were not excluded from analysis in the EPIC-Elderly Study, so inclusion of the subjects with diabetes mellitus (2006) would also have led to using the same data twice.

Results: (Non)significantly increased risks were found in 3 cohorts (4, 11, 15a), including 242 cases. But (non)significant protective effects were found in 2 other cohorts (7, 21), including 2,852 cases.
Effect modification: Increased risks were restricted to findings from Southern European countries (Greece, Spain), and among cohorts of very small size. But few results were found, and no data was provided about interactions with possible confounders.
Conclusion: Inconsistent findings were done. No evidence was found for an association between total dairy consumption and all-cause mortality.

Prospective studies of total dairy and all-cause mortality:
AuthorCohort nameCasesRelative Risk (RR)
22) Bonthuis M (2010)No cohort name defined177HR = 0.82 (0.51-1.32; P = 0.26).
21) van der Pols JC (2009)The Boyd Orr Cohort1,468HR = 0.77 (0.61-0.98; P = 0.04).
20) González S (2008)No cohort name defined83RR = 0.99 (0.75-1.30; P = 0.93).
17) Kelemen LE (2005)The Iowa Women's Health Study3,978RR = 1.10 (0.97-1.24; P = 0.36).
15b) Trichopoulou A (2005)The EPIC-elderly Study4,047MR = 1.03 (0.99-1.07).
15a) Trichopoulou A (2005)The Greek part of The EPIC Study131MR = 1.34 (1.14-1.57).
12) Fortes C (2000)No cohort name defined53RR = 0.38 (0.14-1.01).
11) Lasheras C (2000)No cohort name defined38 (< 80 y), and

58 (≥ 80 y)
Age < 80 y: RR = 0.63 (0.27-1.47; P = 0.29).

Age ≥ 80: RR = 2.51 (1.22-5.15; P = 0.01).
9) Kouris-Blazos A (1999)No cohort name defined38RR = 0.99 (0.95-1.02).
7) Knoops KT (2006)The HALE1,384HR = 1.10 (1.00-1.21) for low consumption.
5) Fawzi W (1994)No cohort name defined232RR = 1.00 (0.72-1.38).
4) Trichopoulou A (1995)No cohort name defined53RR = 1.04 (1.01-1.07; P = 0.01).
Total number of cases: 11,740Average RR = 1.01