Sample size calculation The required sample size was estimated to be 363 (min 272) based on the prevalence of IBS in the general population being estimated to be 13% with an estimated error of 4%, Type 1 error (alpha) 5% (two-tailed), power 95%, and allowing for a 25% dropout rate
If you would like a sample of any of our preroll tubes to see the difference in filters and paper types, as well as compare how they pack and burn to preroll cones, contact our team
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This approval marked a significant regulatory milestone for the European the market, ensuring a more regulated and safer environment for consumers (European Commission, 2025)
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