Cigarette smoking and smoking cessation among older adults: United States, 1965-94

OBJECTIVE: To characterise patterns of cigarette smoking and smoking cessation among older adults in the United States. DESIGN: Data from the National Health Interview Surveys (NHIS) 1965-94 were analysed. The NHIS is a cross-sectional survey using a representative national sample. SETTING: In most cases interviews were conducted in the home; telephone interviews were conducted when respondents could not be interviewed in person. PARTICIPANTS: Participants were from a representative sample of the American civilian, non-institutionalised population aged 18 and older. Sample sizes for the years analysed ranged from n = 19,738 to n = 138,988 overall, and n = 3806 to n = 12,491 for those aged 65 years and older. MAIN OUTCOME MEASURES: Using the NHIS data from 1965-94, trends in current smoking and the prevalence of smoking cessation by demographic characteristics among older adults (65 years and older) were assessed and compared with trends among younger adults. A logistic regression analysis was conducted to determine the demographic characteristics of former smokers compared with current smokers among those aged 65 and older. RESULTS: The prevalence of current smoking among 65 year olds and older declined from 1965 to 1994 (17.9% to 12.0%). Although smoking prevalence was lower among older adults than younger adults (aged 18- 64), the rate of decline in smoking was slower among older adults. Among older adults, the prevalence of cessation rose with increasing educational attainment, and was consistently higher for men than for women and for whites compared with blacks. After adjustment for demographic factors among older adults who had ever smoked, increasing age and educational attainment were strongly related to the likelihood of being a former smoker. Although there were no racial differences among women, older white (OR = 2.6) and Hispanic (OR = 3.67) men were significantly more likely to be former smokers than older black men. Also, the gender difference in smoking cessation was noted only for whites. CONCLUSIONS: Given the projected increase in the elderly population, the medical and economic consequences of smoking will become a greater burden in the next decades. Therefore, focusing attention on cessation among the elderly is an immediate and urgent priority for public health professionals and clinicians.


     

Patterns of smoking, risk factors for smoking, and smoking cessation among Vietnamese men in Massachusetts (United States)

OBJECTIVES—To measure the prevalence and patterns of, and risk factors for, smoking and other tobacco use among Vietnamese men in Massachusetts (United States).
METHODS—Data were obtained via a telephone interview of 774 Vietnamese men in 1994.
DESIGN—Cross-sectional survey administered via telephone in 1994.
SETTING—Massachusetts, United States.
SUBJECTS—Randomly selected Vietnamese men (n = 774).
MAIN OUTCOME MEASURES—Present and past use of tobacco products, knowledge and attitudes regarding tobacco, and risk factors for tobacco use. Results were compared with data from the Massachusetts general population.
RESULTS—Vietnamese men smoked at a rate 1.9 times that of the Massachusetts general men's rate (43% vs 24%). The smoking rate did not decrease with increasing length of residence in the United States. In a logistic regression, risk factors for current smoking were: age in the thirties; history of parental smoking; lower educational level; higher depression score; low level of exercise; lack of health insurance; and geographical origin from the south coast of Vietnam. Smoking cessation declined with increasing depression score. Most smokers (76%) had no plans to quit smoking.
CONCLUSIONS—Vietnamese men smoke at much higher rates than the general population, and are much less likely to be planning cessation. High rates of depression and sociocultural barriers to smoking cessation must be addressed in efforts to reduce tobacco use among this high-risk population.


Keywords: smoking cessation; tobacco use; Vietnamese     

Features of sales promotion in cigarette magazine advertisements, 1980-1993: an analysis of youth exposure in the United States

OBJECTIVE: To examine the presence of features of sales promotion in cigarette advertising in United States magazines, and to describe trends in youth (ages 12-17) exposure to such advertising (termed "promotional advertising"). DESIGN: Analysis of 1980-1993 annual data on: (a) total pages and expenditures for "promotional advertising" (advertising that contains features of sales promotion) in 36 popular magazines (all magazines for which data were available), by cigarette brand; and (b) readership characteristics for each magazine. We defined promotional advertising as advertisements that go beyond the simple advertising of the product and its features to include one or more features of sales promotion, such as coupons, "retail value added" promotions, contests, sweepstakes, catalogues, specialty item distribution, and sponsorship of public entertainment or sporting events. MAIN OUTCOME MEASURES: Total pages of, and expenditures for promotional advertising in magazines; and gross impressions (number of readers multiplied by the number of pages of promotional advertising) among youth and total readership. RESULTS: During the period 1980-1993, tobacco companies spent $90.2 million on promotional advertising in the 36 magazines. The proportion of promotional advertising appearing in "youth" magazines (defined as magazines with a greater than average proportion of youth readers) increased from 7% in 1980 to nearly 100% in 1987. Although youth readers represented only 19% of magazine readers, the proportion of youth gross impressions to total gross impressions of tobacco promotional advertising exceeded this value throughout the entire period 1985-1993, peaking at 33% in 1987. The five "youth" cigarette brands (defined as brands smoked by at least 2.5% of smokers aged 10-15 years in 1993) accounted for 59% of promotional advertising in all magazines, but for 83% of promotional advertising in youth magazines during the study period. CONCLUSIONS: In their magazine advertising, cigarette companies are preferentially exposing young people to advertisements that contain sales promotional features.     

Smoking prevalence and risk factors for smoking in a population of United States Air Force basic trainees

OBJECTIVE—To provide a comprehensive assessment of smoking prevalence and risks for smoking in an entire population of United States Air Force (USAF) military basic trainees (n = 32 144).
DESIGN—Population-based survey with every individual entering the USAF enlisted force from August 1995 to August 1996.
SETTING—USAF Basic Military Training (BMT) facility at Lackland Air Force Base, Texas. All trainees were assessed during the first week of BMT.
MAIN OUTCOME MEASURES—A 53-item questionnaire was developed to assess four domains: demographics, smoking history, risk factors for smoking, and other health behaviours.
RESULTS—Approximately 32% of the trainees smoked regularly before basic training and a small percentage of the trainees (7.6%) described themselves as ex-smokers. Men, Euro-Americans, and those from lower educational backgrounds were more likely to smoke than other trainees. On average, smokers had smoked for approximately four years and had low nicotine dependence scores. Individuals who had smoked before BMT were more likely to use other drugs (such as alcohol, binge drinking, smokeless tobacco), and were less physically active than never-smokers. These findings were particularly strong for those who smoked up to basic training but were also evident for ex-smokers.
CONCLUSIONS—Smoking is a prevalent risk factor among individuals entering the USAF. Furthermore, smoking was related to other risk factors believed to lower military readiness, including alcohol use and decreased physical activity. Comprehensive tobacco control policies aimed at reducing smoking among military trainees are needed.


Keywords: military trainees; smoking prevalence; United States     

Non-smoking policies, tobacco education, and smoking cessation programmes in facilities serving the elderly in Michigan, United States

OBJECTIVE: To determine the extent of and impetus for smoke-free policies in facilities serving Michigan's elderly, and the extent of tobacco education and smoking cessation programmes for elders and staff of these facilities. DESIGN: Telephone survey in February 1997 of three types of facilities serving Michigan's elderly population. SUBJECTS: Area Agencies on Aging (n = 12), Councils and Commissions on Aging (n = 31), and senior centres (n = 98) located in Michigan, USA. MAIN OUTCOME MEASURES: Prevalence of smoke-free policies, tobacco education, and smoking cessation programmes in facilities serving the elderly. RESULTS: 99% (95% confidence interval (CI) = 97% to 100%) of 141 facilities surveyed have an indoor smoke-free policy. Eighty-five per cent (95% CI = 79% to 91%) of these policies prohibit all smoking inside the facility. Forty-five per cent (95% CI = 37% to 54%) cited a law as requiring the smoke-free policy, whereas 38% (95% CI = 30% to 46%) indicated the policy was adopted voluntarily for health reasons. Forty-two per cent (95% CI = 34% to 50%) of the facilities provided some education on the dangers of tobacco, while 11% (95% CI = 6% to 16%) arranged smoking cessation programmes for staff or elders. CONCLUSIONS: In Michigan, a very high percentage of non-institutional facilities serving the elderly have smoke-free policies, which appear to increase participation at these facilities. Tobacco education programmes are provided in less than half the facilities, and very few arrange smoking cessation programmes for elders or staff.




     

Medical costs of smoking in the United States: estimates, their validity, and their implications

OBJECTIVE: To compare estimates of the medical costs of smoking in the United States and to consider their relevance to assessing the costs of smoking in developing countries and the net economic burden of smoking. DATA SOURCES: A Medline search through early 1999 using keywords "smoking" and "cost", with review of article reference lists. STUDY SELECTION: Peer-reviewed papers examining medical costs in a single year, covering the non-institutionalised American population. DATA EXTRACTION: Methods underlying study estimates were identified, described, and compared with attributable expenditure methodology in the literature dealing with costs of illness. Differences in methods were associated with implied differences in findings. DATA SYNTHESIS: With one exception, the studies find the annual medical costs of smoking to constitute approximately 6-8% of American personal health expenditures. The exception, a recent study, found much larger attributable expenditures. The lower estimates may reflect the limitation of analysis to costs associated with the principal smoking-related diseases. The higher estimate derives from analysis of smoking-attributable differences in all medical costs. However, the finding from the most recent study, also considering all medical costs, fell in the 6-8% range. CONCLUSIONS: The medical costs of smoking in the United States equal, and may well exceed, the commonly referenced figure of 6-8%. This literature has direct methodological relevance to developing countries interested in assessing the magnitude of their current cost-of-smoking burden and their future burdens, with differences in tobacco use histories and the availability of chronic disease treatment affecting country-specific estimates. The debate over the use of gross or net medical cost estimates is likely to intensify with the proliferation of lawsuits against the tobacco industry to recover expenditures on tobacco-produced disease.     

Smoking cessation by socioeconomic status and marital status: the contribution of smoking behavior and family background.

We studied socioeconomic status and marital status as predictors of smoking cessation, adjusting for previous smoking behavior and family background by using a large Finnish prospective twin dataset unselected for smoking behavior. The data were collected by postal surveys in 1981 and 1990, and the sample comprised 3,069 current smokers, of whom 20% had quit smoking by 1990. Logistic regression analyses of all twin individuals and conditional logistic regression analysis of discordant pairs were used to predict smoking cessation. High education predicted smoking cessation among both men (OR=2.32, 95% CI=1.31-4.10) and women (OR=3.98, 95% CI=1.85-8.51) as did high social class among women. Additionally, starting at a late age, smoking a small number of cigarettes per day, and a low level of nicotine per cigarette predicted cessation. Socioeconomic differences in cessation diminished only slightly when we adjusted for smoking behavior factors. Among the twin pairs who were discordant in terms of smoking cessation, the twin who continued smoking also smoked more on average at baseline (men: OR=.94, 95% CI=.89-.99; women: OR=.82, 95% CI=.71-.94). The male twins who continued smoking had a smaller probability of getting married during the follow-up than had the cotwin who had quit smoking (OR=3.91, 95% CI=1.02-15.02). Indicators of socioeconomic status were important predictors of smoking cessation even when we adjusted for previous smoking behavior. For men, marriage was associated with an increased probability of cessation     

Message framing for smoking cessation: the interaction of risk perceptions and gender.

Because quitting smoking is clearly linked to preventing health problems such as lung cancer, research on health message framing based on prospect theory suggests that gain-framed messages (i.e., emphasizing the benefits of quitting smoking) would be more persuasive in promoting cessation than loss-framed messages (i.e., emphasizing the costs of continuing to smoke). However, because women tend to anticipate greater perceived risk from quitting smoking than men, this may affect how receptive they are to specific message framing interventions. Data from 249 participants (129 females, 120 males) in a clinical trial of message framing for smoking cessation with bupropion were used to examine how gender differences in perceptions of the risks associated with quitting influence the effects of framed interventions using number of days to smoking relapse as the criterion. Perceived risk of quitting scores were dichotomized using a median split for the entire sample. Women reported a higher perceived risk of cessation than men. Participants who anticipated high risks associated with quitting smoking reported fewer days to relapse. Further, females in the gain-framed condition who reported low perceived risks of cessation had a greater number of days to relapse, as opposed to females in the loss-framed condition. These findings suggest that message framing interventions for smoking cessation should consider the influence of gender and risk perceptions associated with quitting on the effectiveness of framed interventions.     

Social class, education, and smoking cessation: Long-term follow-up of patients treated at a smoking cessation unit.

Our objective was to examine social class and educational differences in long-term smoking cessation success among a cohort of smokers attending a specialized smoking clinic. We studied sustained abstinence after cessation among 1,516 smokers (895 men and 621 women) treated for smoking cessation between 1995 and 2001 at a university teaching hospital in the metropolitan area of Barcelona, Spain. We calculated 1-year and long-term (up to 8-year) abstinence probabilities by means of Kaplan-Meier curves and the hazard ratio of relapse by means of Cox regression, after adjusting for other predictors of relapse. Overall abstinence probability was .277 (95% CI = .254-.301). Men and women in social classes IV-V had significant hazard ratios of relapse after long-term follow-up (men: 1.36, 95% CI = 1.07-1.72; women: 1.60, 95% CI = 1.24-2.06), as compared with patients in social classes I-II. The same independent effect was observed for education: Men and women with primary or less than primary studies had higher hazard ratios of relapse (men: 1.75, 95% CI = 1.35-2.25; women: 1.92, 95% CI = 1.51-2.46), as compared with patients with a university degree. Similar estimates were obtained after adjustment for stage of change, Fagerstr?m score for nicotine dependence, and type of treatment. Patients of lower socioeconomic status are at higher risk of relapse, and this association is independent of other well-known predictors of relapse. Social differences have to be taken into account in the clinical setting when tailoring specific actions to treat smoking dependence.     

Trends in cigarette smoking: the Minnesota Heart Survey, 1980-1982 through 2000-2002.

This paper reports population-based secular trends in smoking prevalence and tobacco exposure among smokers. The Minnesota Heart Survey (MHS) assessed smoking in probability samples in the seven-county Minneapolis-St. Paul metropolitan area. Five surveys were conducted in 1980-1982, 1985-1987, 1990-1992, 1995-1997, and 2000-2002 using similar sampling strategies and consistent protocols. Participants were metropolitan area residents of Minnesota, aged 25-74 years, with the addition of 75-84-year-olds in the last three surveys. In men, age-adjusted self-reported prevalence of current smoking steadily declined from 32.9% in 1980-1982, to 23.0% in 1995-1997, and to 20.6% in 2000-2002. In women, self-reported smoking was 31.8% in 1980-1982, 18.5% in 1995-1997, and 19.5% in the latest survey. Age-adjusted self-reported quantity of cigarettes consumed among smokers declined over the same period. Changes from 1995-1997 to 2000-2002 were not significant. Compared with Whites, Black participants had higher levels of smoking and later onset of the decline in smoking prevalence. A decline in smoking prevalence seems to have leveled off or reversed between the two most recent survey periods (1995-1997 through 2000-2002). Focus on smoking cessation should continue, especially in the subpopulation that smokes more than the majority.     

Salmonella in dairy operations in the United States: prevalence and antimicrobial drug susceptibility

Salmonella serotypes are important foodborne pathogens of humans that can be acquired through consumption of contaminated meat and dairy products. Salmonella infection also can be a significant animal health issue. As part of a national study of U.S. dairy operations conducted between March and September 2002, fecal samples were collected from representative cows in 97 dairy herds in 21 states and were cultured to determine the prevalence of Salmonella shedding. Salmonella was recovered from the feces of at least one cow in 30.9% of the herds. Overall, 7.3% of fecal samples were culture positive for Salmonella. The three most frequently recovered serotypes were Salmonella Meleagridis (24.1%), Salmonella Montevideo (11.9%), and Salmonella Typhimurium (9.9%). The susceptibilities of Salmonella isolates recovered were determined using a panel of 16 antimicrobial drugs. Salmonella isolates recovered from dairy cows had relatively little resistance to these antimicrobial agents; 83.0% of the isolates were susceptible to all antimicrobials tested. This study provides updated information on the prevalence and susceptibility patterns of Salmonella in dairy herds and on cow and herd characteristics. These data contribute to our understanding of the ecology of Salmonella in the dairy farm environment.     

Cigarette smoking patterns among young adults aged 18-24 years in the United States.

Most tobacco control programs focus on prevention for children or cessation for adults. Little is known about cigarette smoking among young adults. This study examined sociodemographic variables associated with current, daily, heavy, and light smoking among young adults in the United States. Data from the 1998-1999 Tobacco Use Supplement to the Current Population Survey (TUS-CPS) were used to examine cigarette smoking patterns and correlates of smoking among 15,371 young adults aged 18-24 years. We found that 26% of young adults were current smokers, 20% were daily smokers, and 8% were former smokers. Current smoking rates were higher among American Indians/Alaska Natives (33%) and Whites (31%) than among other racial/ethnic groups. Compared with white-collar workers, blue-collar and service workers were more likely to report current and daily smoking. Blue-collar workers also were more likely to report heavy smoking (OR = 1.97). The unemployed (those in the labor force but not currently working) and those reporting an annual household income of less than US$20,000 were more likely to report current, daily, and heavy smoking, compared with those not in the labor force and those reporting an annual household income of $20,000 or more, respectively. Young adults not currently enrolled in school were more than twice as likely to report current (OR = 2.36) and daily (OR = 2.90) smoking, compared with those currently enrolled in school. Differential cigarette smoking patterns by race/ethnicity, occupation, employment status, household income, and school enrollment status should be considered when developing interventions to reduce smoking among young adults.