Carrozzi Laura, Falcone Franco, Carreras Giulia, Pistelli Francesco, Gorini Giuseppe, Martini Andrea, Viegi Giovanni
Pulmonary Unit, CardioThoracic and Vascular Department, University Hospital of Pisa, via Paradisa 2, Cisanello, Pisa 56124, Italy.
Italian Association of Hospital Pulmonologists (AIPO) Research,Via Antonio Da Recanate, 2, Milan 20124, Italy.
Int J Environ Res Public Health. 2014 Feb 26;11(3):2395-406. doi: 10.3390/ijerph110302395.
This study aims to estimate the number of life years gained with quitting smoking in Italian smokers of both sexes, by number of cigarettes smoked per day (cig/day) and age at cessation. All-cause mortality tables by age, sex and smoking status were computed, based on Italian smoking data, and the survival curves of former and current smokers were compared. The more cig/day a man/woman smokes, and the younger his/her age of quitting smoking, the more years of life he/she gains with cessation. In fact, cessation at age 30, 40, 50, or 60 years gained, respectively, about 7, 7, 6, or 5, and 5, 5, 4, or 3 years of life, respectively, for men and women that smoked 10-19 cig/day. The gain in life years was higher for heavy smokers (9 years for >20 cig/day) and lower for light smokers (4 years for 1-9 cig/day). Consistently with prospective studies conducted worldwide, quitting smoking increases life expectancy regardless of age, gender and number of cig/day. The estimates of the number of years of life that could be gained by quitting smoking, when computed specifically for a single smoker, could be used by physicians and health professionals to promote a quit attempt.
本研究旨在按每日吸烟量（支/天）和戒烟年龄，估算意大利男女吸烟者戒烟后获得的生命年数。根据意大利吸烟数据计算了按年龄、性别和吸烟状况划分的全因死亡率表，并比较了既往吸烟者和当前吸烟者的生存曲线。男性/女性每天吸烟支数越多，且戒烟年龄越小，戒烟后获得的生命年数就越多。事实上，对于每天吸10 - 19支烟的男性和女性，分别在30岁、40岁、50岁或60岁戒烟，可分别获得约7年、7年、6年或5年，以及5年、5年、4年或3年的生命年数。重度吸烟者（每天吸>20支烟）获得的生命年数更高（9年），轻度吸烟者（每天吸1 - 9支烟）获得的生命年数更低（4年）。与全球开展的前瞻性研究一致，无论年龄、性别和每日吸烟支数多少，戒烟均可提高预期寿命。为单个吸烟者专门计算的戒烟后可获得的生命年数估计值，可被医生和健康专业人员用于促进戒烟尝试。
