Nitrates, nitrites and gastric cancer in Great Britain

In simple terms

This study is like taking a single photo of two groups of people - it shows they're different right now but doesn't tell us why or if one thing causes another. It's weak evidence that needs much more research.

20%

Analysis score

20/ 44

Maximum 44 for a cross-sectional study.

Where the score came from

Reporting0

Methodology0

Publication100

Statistical0

Study type (basis of the score)

Cross-Sectional Study

Level 4 - Case series

What’s the bottom line?

Scientists measured saliva chemicals in two groups with different stomach cancer risks.

Where does this study sit?

Reviews of RCTs (Meta-analyses)

Max 100

Randomized Trials

Max 90

Reviews of Cohort Studies

Max 85

Cohort Studies

Max 72

Reviews of Case-Control Studies

Max 63

Case-Control Studies

Max 58

Cross-Sectional & Case Series

Max 50

Expert Opinion

Max 5

StrongerWeaker

Cross-Sectional & Case Series

Level 4

20 / 100

Quality score

Snapshots of a population at a single point in time, or descriptions of small groups. Can identify correlations and prevalence, but cannot determine cause and effect.

Cannot establish causation

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Key takeaways

Summary

Based on the study abstract and findings.

1This suggests higher saliva nitrate/nitrite might be linked to lower cancer risk.
2The group with less cancer had more nitrate and nitrite in their saliva.

Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data