|
Reference
|
Tea type
|
Previous review*
|
Present review#
|
|---|
| | |
Cohort study
|
Case–control study
|
Over all
| | |
|---|
| | |
N
|
Pooled RR (95%CI)
|
N
|
Pooled OR (95%CI)
|
N
|
Pooled RR (95%CI)
|
Tea type
|
N
|
Pooled RR (95%CI)
|
|---|
|
Breast cancer
|
|
Ogunleye et al. 2010
|
Green tea
|
2
|
0.85 (0.65-1.12)
|
5
|
0.81 (0.75-0.88)
|
7
|
0.81 (0.75-0.88)
|
Tea
|
15
|
1.02 (0.98-1.06)
|
|
Sun et al. 2006
|
Green tea
|
3
|
0.85 (0.66-1.09)
|
1
|
0.47 (0.26-0.85)
|
4
|
0.78 (0.61-0.98)
|
Green tea
|
4
|
0.97 (0.90-1.06)
|
|
Sun et al. 2006
|
Black tea
|
5
|
1.15 (1.02-1.31)
|
8
|
0.91 (0.84-0.98)
|
13
|
0.98 (0.88-1.09)
|
Black tea
|
4
|
1.18 (1.05-1.32)
|
|
Seely et al. 2005
|
Green tea
|
3
|
0.89 (0.71-1.10)
|
2
|
0.44 (0.14-1.31)
|
-
|
-
| | | |
|
Colorectal cancer
|
|
Wang et al. 2012
|
Green tea
|
-
|
-
|
13
|
0.95 (0.81-1.11)
|
-
|
-
|
Tea
|
15
|
0.98 (0.93-1.03)
|
|
Sun et al. 2006
|
Green tea
|
4
|
0.97 (0.82-1.16)
|
4
|
0.74 (0.63-0.86)
|
8
|
0.82 (0.69-0.98)
|
Green tea
|
5
|
1.00 (0.94-1.07)
|
|
Sun et al. 2006
|
Black tea
|
7
|
1.02 (0.78-1.34)
|
13
|
0.98 (0.84-1.15)
|
20
|
0.99 (0.87-1.13)
|
Black tea
|
2
|
0.99 (0.86-1.14)
|
|
Zhang et al. 2010
|
Tea
|
13
|
1.28 (1.02-1.61)
|
-
|
-
|
13
|
1.28 (1.02-1.61)
| | | |
|
Liver cancer
|
|
Sing et al. 2011
|
Tea
|
7
|
0.84 (0.69-1.02)
|
6
|
0.86 (0.44-1.14)
|
11
|
0.77 (0.57-1.03)
|
Tea Green tea
|
4
|
0.93 (0.75-1.17)
|
| | | | | | | | | |
3
|
0.93 (0.75-1.17)
|
|
Prostate cancer
|
|
Zheng et al. 2011
|
Green tea
|
4
|
1.00 (0.66-1.53)
|
3
|
0.43 (0.25-0.73)
|
7
|
0.72 (0.45-1.15)
|
Tea
|
7
|
1.00 (0.87-1.15)
|
|
Zheng et al. 2011
|
Black tea
|
Prospective: 3
|
0.83 (0.63-1.08)
|
6
|
1.07 (0.78-1.48)
|
11
|
0.99 (0.82-1.20)
|
Green tea
|
4
|
0.99 (0.88-1.11)
|
| | |
Retrospective: 2
|
1.04 (0.73-1.50)
| | | | |
Black tea
|
3
|
0.99 (0.90-1.09)
|
|
Stomach cancer
|
|
Kang et al. 2010
|
Green tea
|
7
|
1.03 (0.92-1.16)
|
11
|
0.74 (0.63-0.86)
|
18
|
0.86 (0.74-1.00)
|
Tea
|
5
|
0.97 (0.92-1.02)
|
|
Myung et al. 2009
|
Green tea
|
7
|
1.04 (0.93-1.17)
|
8
|
0.73 (0.64-0.83)
|
15
|
0.82 (0.70-0.96)
|
Green tea
|
4
|
0.99 (0.94-1.05)
|
|
Zhou et al. 2008
|
Green tea
|
4
|
1.56 (0.93-2.60)
|
HCC:4
|
1.12 (0.70-1.77)
|
14
|
0.98 (0.77-1.24)
|
Black tea
|
1
|
0.94 (0.72-1.22)
|
| | | | |
PCC:6
|
0.67 (0.49-0.92)
| | | | | |
-
HCC: Hospital based case–control PCC: population based case–control N: number of studies included.
- *Pooled results between highest consumption level and non/lowest drinker.
-
#Pooled results with an increase in tea consumption.
