No star rating or ROS is assigned when the risk-outcome pair is found to have a 95% uncertainty interval estimated without between-study heterogeneity (i.e., using the fixed effects model results prior to the incorporation of gamma) that crosses the null
The stimulant, which can leave a red, brown or black stain on the teeth, is thought to be the worlds fourth most commonly used psychoactive substance, after caffeine, alcohol, and nicotine, with hundreds of millions of users globally
By the early 1960s, just before the Surgeon General's advisory committee issued its verdict on the health risks of smoking, the theme had evolved into the mythical "Marlboro Country," where cowboys in white hats rode horseback between golden grass and blue skies, or sat around a campfire with an open red-topped pack posed next to the crackling flames
Then, chunks of roasted betel nut and sweet condiments are sprinkled on top of the mix, and the leaf is folded into a neat triangle and secured with a toothpick