Data | Variables | Source | Description |
Smoking prevalence | Age, gender, smoking status | 2003 NHNS-J | Current smokers: “Have you ever smoked?” Total of 100 or more cigarettes or for 6 months or more |
“Currently (within this month), do you smoke? Smoke everyday or sometimes | |||
Population projection | Age, gender | National Institute of Population and Social Security Research | Population projection data (2000–30) |
Quit attempt rate | Age, gender, smokers, quitters | 2002–5 NRT Tracking Study | Quit attempt in the last year: “Have you ever tried to stop smoking for quitting it?” Yes |
“When was the last time you tried to stop smoking?” within the last year | |||
NRT use | Age, gender | 2002–5 NRT Tracking Study | NRT use for cessation |
A quit attempt in the last year and “What was the method you used the last time?” NRT gum, NRT patch | |||
NRT effectiveness | – | Systematic reviews | NRT use results in an approximate doubling of long-term abstinence. |
Mortality rates and smoking RRs | Age, gender, smoking status | Never smokers | |
JACC | Lung cancer mortality rates by age and gender | ||
JACC and CPS-II | CVD mortality rates predicted from CPS-II and JACC | ||
Current smokers | |||
JACC | Lung cancer RRs for males by 10-year age group | ||
JACC | CVD RRs for males and females by 10-year age group | ||
Former smokers | |||
JACC and CPS-II | Estimated RRs risks by 10-year age group, and age at cessation for lung cancer and CVD | ||
Long-term cessation success rate without NRT | – | Systematic reviews | 5% |
CPS-II, Cancer Prevention II cohort study; CVD, cardiovascular disease; JACC, Japan Collaborative Cohort study; NHNS-J, National Health and Nutrition Survey-Japan; NRT, nicotine replacement therapy; RR, relative risk.