These surveys used a stratified two-stage cluster sampling in rural areas and three stages sampling in urban areas
Other A/C Problems to Monitor In addition to funny smells coming from your air conditioning system, any homeowners may notice other problems
The new widespread Camel Crush campaign has caused health groups to pressure state attorneys to investigate if it violates the Tobacco Master Settlement Agreement
In response to higher prices and changing consumer preferences, companies are adapting their product offerings and developing new product lines, including alternative products, to better meet market demands
Our second evidence synthesis was a systematic review of primary studies on the benefits and harms of e-cigarettes for smoking cessation,23 which updated an existing Cochrane review from 2016.86 Although Cochrane has since transformed its review into a living systematic review,24 it had not yet done so when we developed our evidence review protocol.87 The Evidence Review and Synthesis Centre at the University of Ottawa conducted the systematic reviews according to our protocol.87 Peer-reviewed search strategies (using the Peer Review of Electronic Search Strategies checklist88) were conducted in MEDLINE, Embase, PsycINFO, and the Cochrane Library in September 2020
In cases where publication bias was suspected, the missing study data were imputed using the Duval and Tweedie trim-and-fill method to adjust for funnel plot asymmetry, and small study effects were assessed 535
