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When articles included only sample size and an OR or HR, the frequencies of smokers/nonsmokers in each treatment group were calculated by using the following procedure: (1) the average percentage of smokers in the untreated samples was calculated across all studies reporting precise frequencies, (2) this average was used to calculate a frequency of untreated smokers for the study in question, and (3) the frequency of smokers in the treated group was input accordingly to replicate the OR/HR reported in the article

Steer clear of unwanted withdrawal symptoms like coughing fits or throat irritation

Research has shown a connection between smoking during pregnancy and a higher risk of asthma, infantile colic and childhood obesity

If you've ever heard somebody say a vape felt "too harsh", there's a good chance the device and e-liquid weren't the right combination