1. Lifestyle Risk Factors for Serrated Colorectal Polyps: A Systematic Review and Meta- analysis 
Lesley Bailie, Maurice B. Loughrey, Helen G. Coleman 
Gastroenterology 
Volume 152, Issue 1, Pages (January 2017)
DOI: /j.gastro
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2. Figure 1 Flow diagram of the study selection process.
Gastroenterology  , DOI: ( /j.gastro )
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3. Figure 2
Forest plot of highest vs lowest category of smoking and serrated polyp risk. HPFUS, Health Professionals Follow-Up Study; NHS, Nurses Health Study.
Gastroenterology  , DOI: ( /j.gastro )
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4. Figure 3
Forest plot of highest vs lowest category of alcohol intake and serrated polyp risk. HPFUS, Health Professionals Follow-Up Study; NHS, Nurses Health Study.
Gastroenterology  , DOI: ( /j.gastro )
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5. Figure 4
Forest plot of highest vs lowest category of BMI and serrated polyp risk.
Gastroenterology  , DOI: ( /j.gastro )
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6. Figure 5
Forest plot of highest vs lowest category of physical activity and serrated polyp risk.
Gastroenterology  , DOI: ( /j.gastro )
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7. Figure 6
Forest plot of highest vs lowest category of medication use and serrated polyp risk. One further RCT (which was not included in meta-analyses due to the different study design) also demonstrated a significant 42% reduced risk for right-sided, but not left-sided, SP when taking 81 mg or 325 mg of aspirin compared with placebo (Wallace et al25).
Gastroenterology  , DOI: ( /j.gastro )
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8. Figure 7
Forest plot of highest vs lowest category of dietary intakes and serrated polyp risk. HPFUS, Health Professionals Follow-Up Study; NHS, Nurses Health Study. All studies reported dietary intakes comparing highest vs lowest tertile, quartile or quintile of intake, with the exceptions of Lieberman et al,40 which is presented per 100-IU increment of vitamin D intake and per 1-g increment of fat and fiber intakes, and Burnett-Hartman et al,28 which compared ≥3 vs 0 servings red meat/wk.
Gastroenterology  , DOI: ( /j.gastro )
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