Skip to main content
. 2009 May 19;11(6):750–755. doi: 10.1093/ntr/ntp059

Table 2.

Relationship between primary smoking indicators of interest

1 2 3 4 5
1. Cigarettes per day (Year 1)
2. Cigarettes per day (Year 2) .86**
3. Cigarettes on first day .52** .41**
4. Age at first puff −.25 −.13 −.26
5. Age of first cigarette −.19 −.15 −.08 .67**

Note. **p < .001. All statistics were nonsignificant (p > .05).