The primary aim of this study was to compare HRQOL in snus-users and dual users (snus and smoking) with never tobacco users. Secondary aim included comparing HRQOL in smokers with non-smokers.
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Health-related quality of life was measured using SF-36.
Timeframe: The time when the data entry is made, about 8 weeks
Tobacco habits.
Timeframe: The time when the data entry is made, about 8 weeks