| Follow up status | ||||
---|---|---|---|---|---|
 | Neither | Exclusive smokeless tobacco user | Exclusive smoker | Dual user | |
Baseline | Neither | 2Â year follow-up | 2Â year follow-up | 2Â year follow-up | 2Â year follow-up |
• 71.5% males [20] | • 4.6% males [20] | 15.7% males [20] | • 8.3% males [20] | ||
4Â year follow-up | 4Â year follow-up | 4Â year follow-up | 4Â year follow-up | ||
• 82.2% males [19] | • 3.1% males [19] | • 13.5% males [19] | • 1.1% males [19] | ||
Exclusive smokeless tobacco user | 2Â year follow-up | 2Â year follow-up | 2Â year follow-up | 2Â year follow-up | |
• 16.6% males [20] | • 26.2% males [20] | • 16.6% males [20] | • 40.7% males [20] | ||
4Â year follow-up | 4Â year follow-up | 4Â year follow-up | 4Â year follow-up | ||
• 15.2% males [19] | • 44.8% males [19] | • 25.5% males [19] | • 14.3% males [19] | ||
Exclusive smoker | 1-2 year follow-up | 1-2 year follow-up | 1-2 year follow-up | 1-2 year follow-up | |
• 20.0% males and females combined [18] | • 1.6% males and females combined [18] | • 73.4% males and females combined [18] | • 5% males and females combined [18] | ||
2Â year follow-up | 2Â year follow-up | 2Â year follow-up | 2Â year follow-up | ||
• 25.6% males [20] | • 3.8% males [20] | • 46.8% males [20] | • 23.8% males [20] | ||
4Â year follow-up | 4Â year follow-up | 4Â year follow-up | 4Â year follow-up | ||
• 16.9% males [19] | • 0.8% males [19] | • 78.7% males [19] | • 3.6% of males [19] | ||
Dual user | 1-2 year follow-up | 1-2 year follow-up | 1-2 year follow-up | 1-2 year follow-up | |
• 17.9% males and females combined [18] | • 8.5%* males and females combined [18] | • 36.6% males and females combined [18] | • 37% males and females combined [18] | ||
4Â year follow-up | 4Â year follow-up | 4Â year follow-up | 4Â year follow-up | ||
• 14.1% males [19] | • 34.2% males [19] | • 31.2% males [19] | • 20.4% males [19] |