Table 3 Age at initiation and intensity of smoking among current smokers by sex and age (n = 551)
From: Persistent disparities in smoking among rural Appalachians: evidence from the Mountain Air Project
Variable | Mean age at initiation (yrs) | P value | Mean # cigarettes per day | P value | Mean pack years | P value |
|---|---|---|---|---|---|---|
Sex | ||||||
 Male | 16.93 | 0.60 | 19.20 | 0.18 | 33.92 | 0.01 |
 Female | 17.33 |  | 17.59 |  | 26.00 |  |
Age | ||||||
  < 45 | 16.21 | 0.07 | 17.24 | 0.31 | 16.30 | <.0001 |
 45–64 | 17.70 |  | 19.17 |  | 36.48 |  |
 65+ | 18.55 |  | 18.50 |  | 48.92 |  |