Reviewer's report
Title:Green tea consumption and risk of esophageal cancer: a meta-analysis of
epidemiologic studies
Version: 1Date:18 May 2012
Reviewer: Guy Eslick
Reviewer's report:
This is an interesting topic for a meta-analysis. However, there are some
important issues which need to be addressed.
THERE ARE TYPOGRAPHICAL AND GRAMMATICAL ERRORS
THROUGHOUT THE MANUSCRIPT WHICH NEED TO BE CORRECTED.
1. METHODS: Could the authors please update their literature search from Dec
2011.
2. METHODS: Could the authors also please include MEDLINE as a database to
conduct their searches in addition to the other databases already selected.
3. DATA EXTRACTION: Please define what "RR" is for the reader.
4. RESULTS: All results (RR; 95% CI) can be to 2 decimal places.
5. PUBLICATION BIAS: The authors could use the Classic fail-safe method. See
Orwin R. A fail-safe N for effect size in meta-analysis. Journal of educational
statistics 1983;8:157-159.
6. DISCUSSION: Did females drink more Green tea than males?
7. TABLE 2: All the estimates with several studies with a large sample size have
no heterogeneity, while estimates with a couple of studies and small sample size
are very heterogeneous, please mention in DISCUSSION.
Level of interest: An article whose findings are important to those with closely
related research interests
Quality of written English: Needs some language corrections before being
published
Statistical review: Yes, and I have assessed the statistics in my report.
Declaration of competing interests:
I declare that I have no competing interests.
Reviewer's report
Title:Green tea consumption and risk of esophageal cancer: a meta-analysis of
epidemiologic studies
Version: 1Date:18 May 2012
Reviewer: Guy Eslick
Reviewer's report:
This is an interesting topic for a meta-analysis. However, there are some
important issues which need to be addressed.
THERE ARE TYPOGRAPHICAL AND GRAMMATICAL ERRORS
THROUGHOUT THE MANUSCRIPT WHICH NEED TO BE CORRECTED.
1. METHODS: Could the authors please update their literature search from Dec
2011.
2. METHODS: Could the authors also please include MEDLINE as a database to
conduct their searches in addition to the other databases already selected.
3. DATA EXTRACTION: Please define what "RR" is for the reader.
4. RESULTS: All results (RR; 95% CI) can be to 2 decimal places.
5. PUBLICATION BIAS: The authors could use the Classic fail-safe method. See
Orwin R. A fail-safe N for effect size in meta-analysis. Journal of educational
statistics 1983;8:157-159.
6. DISCUSSION: Did females drink more Green tea than males?
7. TABLE 2: All the estimates with several studies with a large sample size have
no heterogeneity, while estimates with a couple of studies and small sample size
are very heterogeneous, please mention in DISCUSSION.
Level of interest: An article whose findings are important to those with closely
related research interests
Quality of written English: Needs some language corrections before being
published
Statistical review: Yes, and I have assessed the statistics in my report.
Declaration of competing interests:
I declare that I have no competing interests.
Please review this paper.
user
Reviewer's report
Title:Green tea consumption and risk of esophageal cancer: a meta-analysis of
epidemiologic studies
Version: 1Date:18 May 2012
Reviewer: Guy Eslick
Reviewer's report:
This is an interesting topic for a meta-analysis. However, there are some
important issues which need to be addressed.
THERE ARE TYPOGRAPHICAL AND GRAMMATICAL ERRORS
THROUGHOUT THE MANUSCRIPT WHICH NEED TO BE CORRECTED.
1. METHODS: Could the authors please update their literature search from Dec
2011.
2. METHODS: Could the authors also please include MEDLINE as a database to
conduct their searches in addition to the other databases already selected.
3. DATA EXTRACTION: Please define what "RR" is for the reader.
4. RESULTS: All results (RR; 95% CI) can be to 2 decimal places.
5. PUBLICATION BIAS: The authors could use the Classic fail-safe method. See
Orwin R. A fail-safe N for effect size in meta-analysis. Journal of educational
statistics 1983;8:157-159.
6. DISCUSSION: Did females drink more Green tea than males?
7. TABLE 2: All the estimates with several studies with a large sample size have
no heterogeneity, while estimates with a couple of studies and small sample size
are very heterogeneous, please mention in DISCUSSION.
Level of interest: An article whose findings are important to those with closely
related research interests
Quality of written English: Needs some language corrections before being
published
Statistical review: Yes, and I have assessed the statistics in my report.
Declaration of competing interests:
I declare that I have no competing interests.
assistant