Analysis of information sources in references of the Wikipedia article "Electronic cigarette" in English language version.
None of the studies included negative controls which would provide stronger evidence for whether the association may be causal.
Among potentially toxic substances common to both products, cigarette smoke generally contains substantially larger quantities than e-cigarette aerosol. However, e-cigarette aerosol contains some substances not found in cigarette smoke."
{{cite book}}: |journal= ignored (help)CS1 maint: multiple names: authors list (link) |quote=There is moderate evidence that risk and severity of dependence are lower for e-cigarettes than combustible tobacco cigarettes.Only two studies comprehensively adjusted for confounding. The median E‐value was 2.90, indicating that the estimates were not robust against unmeasured confounding.
None of the studies included negative controls which would provide stronger evidence for whether the association may be causal.
{{cite journal}}: CS1 maint: multiple names: authors list (link){{cite journal}}: CS1 maint: multiple names: authors list (link){{cite book}}: |journal= ignored (help)CS1 maint: multiple names: authors list (link) |quote=There is moderate evidence that risk and severity of dependence are lower for e-cigarettes than combustible tobacco cigarettes.Among potentially toxic substances common to both products, cigarette smoke generally contains substantially larger quantities than e-cigarette aerosol. However, e-cigarette aerosol contains some substances not found in cigarette smoke."
{{cite book}}: |journal= ignored (help)CS1 maint: multiple names: authors list (link) |quote=There is moderate evidence that risk and severity of dependence are lower for e-cigarettes than combustible tobacco cigarettes.Only two studies comprehensively adjusted for confounding. The median E‐value was 2.90, indicating that the estimates were not robust against unmeasured confounding.
None of the studies included negative controls which would provide stronger evidence for whether the association may be causal.
{{cite journal}}: CS1 maint: multiple names: authors list (link){{cite journal}}: CS1 maint: multiple names: authors list (link)Among potentially toxic substances common to both products, cigarette smoke generally contains substantially larger quantities than e-cigarette aerosol. However, e-cigarette aerosol contains some substances not found in cigarette smoke."
{{cite book}}: |journal= ignored (help)CS1 maint: multiple names: authors list (link) |quote=There is moderate evidence that risk and severity of dependence are lower for e-cigarettes than combustible tobacco cigarettes.None of the studies included negative controls which would provide stronger evidence for whether the association may be causal.
Only two studies comprehensively adjusted for confounding. The median E‐value was 2.90, indicating that the estimates were not robust against unmeasured confounding.
Only two studies comprehensively adjusted for confounding. The median E‐value was 2.90, indicating that the estimates were not robust against unmeasured confounding.
Only two studies comprehensively adjusted for confounding. The median E‐value was 2.90, indicating that the estimates were not robust against unmeasured confounding.
None of the studies included negative controls which would provide stronger evidence for whether the association may be causal.