0
no smoking
1
3
2
0
1
1
2
3
2
3
4
2
3
2
4
1
0
1
3
2
3
1
2
0
4
1
1
1
3
1
1
4
1
1
3
1
0
2
2
2
0
3
6
4
1
1
2
0
1
