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PubMed1995

Response to smoking as a function of prior smoking amounts.

Smoking patterns are changing to accommodate new environmental smoking restrictions. The current study explored the effects of prior smoking amounts on the behavioral, physiological, and subjective effects of smoking a single cigarette. Ten smokers (six females, four males) each participated in four laboratory sessions of 6 h duration. During each session, they smoked 0, 2, 5, or 11 cigarettes which were evenly spaced throughout the 6-h period at intervals ranging from 30 min (11 cigarettes) to 120 min (2 cigarettes), with condition order determined by a Latin square. At the end of each session, all smoked a final cigarette. Response to the last cigarette of the 6-h session was influenced by pretreatment smoking amounts. Number of puffs drawn from the cigarette (15.0, 14.1, 13.3, and 10.1) was inversely related to prior smoking density, as was heart rate increase (5.8, 4.0, 2.4, and 1.3 bpm). Three physical symptoms of smoking, dizzy, lightheaded and tingling, were significantly greater when preceded by 6 h of no smoking than when preceded by smoking at 30-min intervals. However, these symptoms were rated as mild (19-27 on a 100-point scale) even when no cigarettes had been smoked. These results suggest some dissipation of acute tolerance after 6 h of smoking abstinence. Liking and satisfaction ratings were inversely related to the pretreatment density of smoking. Liking scores for the last cigarette were 85, 71, 68 and 48 (on a 100-point analog scale) when 0, 2, 5 and 11 cigarettes had been smoked. Overall, the study showed that physiological and subjective effects of smoking are modulated by recent histories of smoking.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMedDate not supplied

Effect of smoking cues and cigarette availability on craving and smoking behavior.

This study examined whether smokers respond differently to smoking cues than to affectively neutral or unpleasant cues without smoking content, and whether reactivity is affected by expectations regarding the opportunity to smoke. Expectancy was manipulated by telling subjects in group SMOKE that they could smoke, and subjects in group NO SMOKE that they could not smoke following each cue-reactivity session. The dependent variables were subjective ratings of "desire to smoke", "high", "withdrawal", and mood, as well as latency to initiate smoking measured in group SMOKE. Statistical analyses demonstrated that only group SMOKE (a) reported greater "desire to smoke" and "withdrawal" to the smoking cues compared to the baseline, (b) reported greater "desire to smoke" to the smoking cues than to the unpleasant or to the neutral cues, and (c) smoked faster after the smoking cues than after the neutral cues. Both groups rated the unpleasant cues as affectively more negative than the neutral cues. The data suggest that the impact of drug-cues on craving and subsequent drug-use is due to their drug-related content, and not to negative affect. Furthermore, the impact of drug-related cues appears to be influenced by perceived drug-availability.

Adolescent↗
PubMed2004

Testing the interaction between parent-child relationship factors and parent smoking to predict youth smoking.

PURPOSE: To examine if parental smoking modifies the association between parent-child connectedness and parental disapproval of youth smoking with smoking behavior among minority youth. METHODS: Baseline data from an urban Seattle, Washington neighborhood-based intervention trial to reduce risk behaviors among minority males and females aged 11-15 years were used to identify 428 minority youth-parent/guardian pairs. Parental smoking status, assessed by telephone interview, and youth reports of connectedness and parental disapproval, assessed by questionnaire, were tested in Chi-squared stratified analysis and logistic regression to predict youth smoking. RESULTS: The majority (86%) of the parents/guardians were the natural parent of the surveyed child (67% mother; 19% father). Parental mean age was 41 years, 54% reported household incomes less than $30K, and 26% were current smokers. Youth had a mean age of 13 years, 28% self-identified as African-American, 37% as Asian, and 35% as "Multiethnic"; 41% reported ever smoking, and 9% reported smoking within the past 30 days. Perceived parental disapproval of smoking was not associated with youth smoking behavior. Among youth whose parent did not smoke, those who reported low level of parent-child connectedness were two times more likely to report ever having smoked than those who reported high levels of connectedness. Among youth whose parent smoked, connectedness was not associated with youth smoking. The interaction between connectedness and parental smoking status and its relationship to youth smoking remained significant after controlling for covariates. CONCLUSION: Overall, high levels of parent-child connectedness are protective against youth smoking. However, family connectedness may not protect children from becoming smokers when parents smoke.

Adolescent↗
PubMed2002

The urge to smoke depends on the expectation of smoking.

AIMS: An earlier study (Dols et al. 2000) suggested that cue-induced urge to smoke depends on the expectation of smoking. The present study tried to replicate the findings under stringently controlled conditions. DESIGN: A 2 (context) x 2 (cues) x 6 (trial) within-subject design. Each smoker entered two different contexts; one context predicted the future occurrence of smoking (i.e. one puff of a cigarette) and one context predicted the non-occurrence of smoking. In each context smokers were exposed to smoking cues (i.e. cigarettes and lighter) or not. SETTING: Laboratory at Maastricht University. PARTICIPANTS: Thirty-two daily smokers, smoking at least five cigarettes a day for at least 2 years. MEASUREMENTS: Participants reported their urge to smoke in each context in the presence and absence of smoking cues using a computerized visual analogue scale (VAS). FINDINGS: The results revealed that the urge to smoke was higher in a context in which smoking was expected relative to a context in which it was not expected. As in the previous study the urge-inducing effect of smoking cues was larger in the smoking context than in the non-smoking context. Moreover, smoking cues did not have a significant effect in the non-smoking context. CONCLUSIONS: It was shown that smoking cues elicit craving due mainly to a generated expectation of the occurrence of smoking and less due to salience or long history of associative learning. Theoretical and practical implications of the results are discussed.

Adult↗
PubMed2005

Workplace smoking policies in Taiwan and their association with employees' smoking behaviours.

BACKGROUND: The implementation of worksite smoking policies has shown significant effects on reducing employees' smoking consumption and protecting non-smoking workers. However, there are no data about workplace smoking policies in Taiwan. The purpose of this study was to document the status of worksite smoking policies in Taiwan and its potential impact on employees' smoking behaviours. METHODS: A two-stage investigation was conducted. The first stage was to examine the current status of workplace smoking policies and the second was to evaluate the relationship between workplace smoking policies and employees' smoking behaviours. After two follow-ups in each stage, 264 companies and 1141 employees returned their questionnaires. RESULTS: Workplace smoking policies were associated with types of businesses and size of workplaces. Only approximately half of manufacturing and service companies have implemented a prohibitive smoking policy. Large facilities (>750 employees) were more likely to implement a prohibitive policy (57%). Employees in workplaces with a prohibitive policy had lower prevalence of smoking and cigarette consumption, and less exposure to passive smoking. Although most smokers agreed with banning smoking in their work environment, no difference in interest in participating in cessation programs was found. CONCLUSIONS: Significant associations were found between workplace smoking policies and employees' smoking behaviours. Results of the study provide basic information for designing more refined smoking policies in the workplace in Taiwan.

Adolescent↗
PubMed1993

Sports participation, age at smoking initiation, and the risk of smoking among US high school students.

OBJECTIVE: To examine smoking patterns, smoking initiation, and the relationship of sports participation and age at smoking initiation to regular and heavy smoking among adolescents. DESIGN: Survey. PARTICIPANTS: A nationally representative sample of US high school students. OUTCOME MEASURES: Prevalences of smoking patterns, prevalence and incidence of smoking initiation, and prevalences and odds of regular and heavy smoking in relation to sports participation and age at smoking initiation. RESULTS: Seventy-two percent of students reported experimenting with, formerly, or ever smoking cigarettes, and 32% reported smoking in the past 30 days. Students who had participated in interscholastic sports were less likely to be regular and heavy smokers than were others who had not participated. Smoking initiation rates increased rapidly after age 10 years and peaked at age 13 to 14 years. Students who began smoking at age 12 years or younger were more likely to be regular and heavy smokers than were students who began smoking at older ages. CONCLUSIONS: These data suggest that smoking initiation at a young age can increase the risk of nicotine addiction during adolescence and that sports participation may influence smoking behavior. Interventions to prevent smoking should be available before age 12 years to help combat the smoking epidemic among youth.

Adolescent↗
PubMed2006

Smoking and age related macular degeneration: the number of pack years of cigarette smoking is a major determinant of risk for both geographic atrophy and choroidal neovascularisation.

BACKGROUND/AIMS: There is evidence that smoking is a risk factor for age related macular degeneration (AMD). However, not all studies have demonstrated this association and several key questions about the role of smoking in AMD have still to be determined. The aim of this study was to further investigate this relation for both choroidal neovascularisation (CNV) and geographic atrophy (GA). METHODS: To investigate the relation between smoking and the risk of developing age related macular degeneration (AMD) in white people, 435 cases with end stage AMD were compared with 280 controls. All subjects had graded stereoscopic colour fundus photography and AMD was defined as the presence of GA or CNV. Smoking history was assessed using multiple parameters in a detailed questionnaire. RESULTS: Comparison of current and former smokers with non-smokers was consistent with smoking being a risk factor for AMD but did not reach statistical significance. There was a strong association between AMD and pack years of cigarette smoking (p = 0.002), the odds ratio increasing with the amount smoked; for subjects with more than 40 pack years of smoking the odds ratio was 2.75 (95% CI 1.22 to 6.20) compared with non-smokers. Both types of AMD showed a similar relation; smoking more than 40 pack years of cigarettes was associated with an odds ratio of 3.43 (95% CI 1.28 to 9.20) for GA and 2.49 (95% CI 1.06 to 5.82) for CNV. Stopping smoking was associated with reduced odds of AMD and the risk in those who had not smoked for over 20 years was comparable to non-smokers. The risk profile was similar for males and females. Passive smoking exposure was associated with an increased risk of AMD (OR 1.87; 95% CI 1.03 to 3.40) in non-smokers. CONCLUSIONS: The authors have demonstrated a strong association between the risk of both GA and CNV and pack years of cigarette smoking. This provides support for a causal relation between smoking and AMD. They also show an increased risk for AMD in non-smokers exposed to passive smoking. Stopping smoking appears to reduce the risk of developing AMD.

Aged↗
PubMed2000

Effect of restrictions on smoking at home, at school, and in public places on teenage smoking: cross sectional study.

OBJECTIVE: To determine the relation between extent of restrictions on smoking at home, at school, and in public places and smoking uptake and smoking prevalence among school students. DESIGN: Cross sectional survey with merged records of extent of restrictions on smoking in public places. SETTING: United States. PARTICIPANTS: 17 287 high school students. MAIN OUTCOME MEASURES: Five point scale of smoking uptake; 30 day smoking prevalence. RESULTS: More restrictive arrangements on smoking at home were associated with a greater likelihood of being in an earlier stage of smoking uptake (P<0.05) and a lower 30 day prevalence (odds ratio 0.79 (95% confidence interval 0.67 to 0.91), P<0.001). These findings applied even when parents were smokers. More pervasive restrictions on smoking in public places were associated with a higher probability of being in a earlier stage of smoking uptake (P<0.05) and lower 30 day prevalence (0.91 (0.83 to 0.99), P=0.03). School smoking bans were related to a greater likelihood of being in an earlier stage of smoking uptake (0.89 (0.85 to 0.99), P<0.05) and lower prevalence (0. 86 (0.77 to 0.94), P<0.001) only when the ban was strongly enforced, as measured by instances when teenagers perceived that most or all students obeyed the rule. CONCLUSIONS: These findings suggest that restrictions on smoking at home, more extensive bans on smoking in public places, and enforced bans on smoking at school may reduce teenage smoking.

Adolescent↗
PubMed2006

Prevalence and predictors of home and automobile smoking bans and child environmental tobacco smoke exposure: a cross-sectional study of U.S.- and Mexico-born Hispanic women with young children.

BACKGROUND: Detrimental effects of environmental tobacco smoke (ETS) exposure on child health are well documented. Because young children's primary exposure to ETS occurs in homes and automobiles, voluntary smoking restrictions can substantially reduce exposure. We assessed the prevalence of home and automobile smoking bans among U.S.- and Mexico-born Hispanics in the southwestern United States, and examined the influence of mother's country of birth and smoking practices on voluntary smoking bans and on child ETS exposure. METHODS: U.S.- and Mexico-born Hispanic mothers of children aged 2 through 12 years were systematically sampled from health clinics in Albuquerque, New Mexico. In-person interviews were conducted with 269 mothers (75.4% response rate) to obtain information on main study outcomes (complete versus no/partial home and automobile smoking bans; child room and automobile ETS exposure) and risk factors (mother's country of birth, maternal and household smoking behaviors). Data were analyzed with chi square tests and logistic regression models. RESULTS: Three-fourths (74-77%) of U.S.-born and 90-95% of Mexico-born mothers reported complete automobile and home smoking bans. In multivariate analyses, mother's U.S nativity, mother's current smoking, and presence of other adult smokers in the home were associated with significantly increased odds of not having a complete home or automobile smoking ban. Mother's smoking was associated with child ETS exposure both indoors (odds ratio [OR] = 3.31) and in automobiles (OR = 2.97). Children of U.S.-born mothers had increased odds of exposure to ETS indoors (OR = 3.24; 95% confidence interval [CI]: 1.37-7.69), but not in automobiles. Having complete smoking bans was associated with substantially reduced odds of child ETS exposure both indoors (OR = 0.10; 95% CI: 0.04-0.27) and in automobiles (OR = 0.14; 95% CI: 0.05-0.36). CONCLUSION: This study of Hispanic mothers in the southwestern U.S. indicates that there are substantial differences between U.S.- and Mexico-born mothers in the prevalence of home and automobile smoking bans, and resulting child ETS exposure. Tobacco interventions to increase smoke-free environments for U.S. Hispanic children should focus on both home and automobile smoking practices, especially among U.S.-born mothers, and utilize strategies that impact smoking practices of all household members.

Adult↗
PubMed2003

Modifying exposure to smoking depicted in movies: a novel approach to preventing adolescent smoking.

BACKGROUND: Most behavioral approaches to adolescent smoking address the behavior directly. We explore an indirect approach: modifying exposure to portrayals of smoking in movies. OBJECTIVES: To describe adolescents' exposure to smoking in movies and to examine factors that could modify such exposure. DESIGN: Occurrences of smoking were counted in each of 601 popular movies. Four thousand nine hundred ten northern New England junior high school students were asked to report which movies they had seen from a randomly generated subsample of 50 films, and responses were used to estimate exposure to the entire sample. Analysis The outcome variable was exposure to movie smoking, defined as the number of smoking occurrences seen. Risk factors for exposure included access to movies (movie channels, videotape use, and movie theater); parenting (R [restricted]-rated movie restrictions, television restrictions, parenting style); and characteristics of the child (age, sex, school performance, sensation-seeking propensity, rebelliousness, and self-esteem). We used multiple regression to assess the association between risk factors and exposure to movie smoking. RESULTS: Subjects had seen an average of 30% of the movie sample (interquartile range, 20%-44%), from which they were exposed to 1160 (interquartile range, 640-1970) occurrences of smoking. In a multivariate model, exposure to movie smoking increased (all P values <.001) by about 10% for each additional movie channel and for every 2 videos watched per week. Exposure increased by 30% for those going to the movie theater more than once per month compared with those who did not go at all. Parent restriction on viewing R-rated movies resulted in a 50% reduction in exposure to movie smoking. There was no association between parenting style and exposure to movie smoking. Much of the protective effect of parent R-rated movie restriction on adolescent smoking was mediated through lower exposure to movie smoking. CONCLUSIONS: Adolescents see thousands of smoking depictions in movies, and this influences their attitudes and behavior. Exposure to movie smoking is reduced when parents limit movie access. Teaching parents to monitor and enforce movie access guidelines could reduce adolescent smoking in an indirect, yet powerful, manner.

Adolescent↗
PubMed1992

Smoking habits in early pregnancy and attitudes towards smoking cessation among pregnant women and their partners.

One-hundred and eighty-seven general practitioners in western Norway recorded smoking habits among 2379 women, consulting for their first regular medical check-up in pregnancy. Forty-six per cent had been daily smokers the last 3 months before pregnancy. Thirty-nine per cent were still smoking at the time of their first check-up. Sixteen per cent of the daily smokers stopped smoking spontaneously during the first few weeks of pregnancy. Fifty-seven per cent of women younger than 20 and 28% of women 30 years and older, did smoke at the first check-up. Single women smoked more often than women living with a partner (58% versus 38%). Smoking habits were not associated with number of previous pregnancies. At the first check-up, 530 pregnant women, still smoking daily, 18-34 years of age, living with a partner, accepted to participate in a smoking intervention study. They filled in a questionnaire about their smoking habits, the smoking habits of their partners and their attitudes towards smoking cessation. Sixty-five per cent reported a reduction in their use of cigarettes after becoming pregnant. The mean reduction in the number of cigarettes smoked daily was 4.0 (31%). Most of the respondents expressed a strong motivation to quit or reduce their smoking habits during their pregnancy. Seventy-two per cent of the partners were daily smokers. Reduction in the consumption of cigarettes, negative attitudes towards smoking and determination to stop smoking was significantly higher among women who were encouraged by their partners to stop smoking and in those who perceived that their partners were willing to reduce their consumption.

Adolescent↗
PubMed1995

Smoking behaviour in young families. Do parents take practical measures to prevent passive smoking by the children?

OBJECTIVE: To investigate smoking behaviour in young families. DESIGN: Cross-sectional study. SETTING: Mother and child health centres in Oslo, Norway. SUBJECTS: The families of 1,046 children attending the health centres for 6-weeks-, 2- or 4- year well child visits. MAIN OUTCOME MEASURES: Daily smoking, smoking quantity and practical measures taken by the parents to prevent passive smoking among the children as assessed by parental reports. RESULTS: In 48% of the families at least one adult was smoking. 33% of the smoking parents smoked more than ten cigarettes per day. 47% of the smoking families reported that they did not smoke indoors. CONCLUSIONS: The parents were less likely to smoke if they were more than 35 years of age, had a child aged less than one year, had a spouse/co-habitee or had a long education. Smoking parents smoked less if they had a spouse/co-habitee, had a child aged less than one year or had few children. Smoking parents were more often careful and did not smoke indoors if they had a child aged less than one year, had a spouse/co-habitee, did not have a smoking spouse/co-habitee or smoked a low number of cigarettes per day.

Adolescent↗
PubMedDate not supplied

Ethnic and gender differences in smoking and smoking cessation in a population of young adult air force recruits.

PURPOSE: To examine gender and ethnic differences in smoking and smoking cessation in a population of young adult military recruits. DESIGN: A self-administered survey of demographics, tobacco use, and other health risk behaviors was administered at the start of basic military training. SETTING: The study was conducted at Lackland Air Force Base, San Antonio, Texas, where all U.S. Air Force recruits complete basic military training. SUBJECTS: All recruits who entered the U.S. Air Force between September 1995 and September 1996 participated in this study (n = 32,144; 100% participation rate). MEASURES: Recruits completed a written 53-item behavioral risk questionnaire. Measures examined in the present study included smoking status (ever having smoked a cigarette, current daily smoking, and quitting); demographics (ethnicity, gender, education, family income, and age); smoking history; and nicotine dependence. RESULTS: Rates of ever smoking, current daily smoking, and quitting were examined in multiple logistic regression analyses as a function of gender and ethnicity, controlling for age, education, and family income. Overall, 54% of recruits had ever smoked a cigarette and 24.9% smoked daily at the time of entry into basic military training. Smoking rates were highest among white and Native American recruits. Among whites, women were more likely to be a current daily smoker (31.6% vs. 29.4%; odds ratio [OR] = 1.18, 99% confidence intervals [CI] = 1.08-1.29). The opposite pattern was observed among African-Americans (5.6% vs. 9.8%, respectively; OR = .57; CI = .41-.79). Current smokers had low levels of nicotine dependence compared with the general population of U.S. smokers, but whites tended to be more dependent than other ethnic groups. Cessation rates were similar for men and women but differed according to ethnicity, ranging from 15% among whites to 23% among Hispanics. CONCLUSIONS: These findings document important gender and ethnic differences in cigarette smoking among military recruits. Whites and Native Americans were more likely to smoke, less likely to quit, and more nicotine-dependent than other ethnic groups. Across gender/ethnicity groups, smoking rates were especially high among white women, with nearly one-third smoking daily until entry into basic training. Gender differences were not observed in cessation rates, but Hispanics were more likely than other ethnic groups to have quit smoking. The results highlight the need to develop effective cessation interventions for this population.

Adolescent↗
PubMed1999

Smoking hygiene: a study of attitudes to passive smoking.

AIM: To study the attitudes and knowledge of adults in the Wellington area about the effects of passive smoking and measures to reduce exposure to smoke. METHODS: A sample of 200 people, randomly selected in the Wellington area, answered a telephone survey on passive smoking. RESULTS: Of the 200 respondents, 160 (80%) were males, 40 (20%) were females and approximately one-third (30%) were smokers. Most people (85.5%) thought public and private areas should be smoke-free when there were children around, but only half (53.5%) thought that smoking should be banned in cars when there are passengers. Most people (92.5%) correctly defined passive smoking. Half were aware that passive smoking negatively contributed to all the following diseases (asthma, cancer, heart disease, respiratory problems) and cot death but a higher percentage identified cancer (75.5%) and cot deaths (68.5%) specifically. Most smokers reported that they smoke at home or in their cars rather than in public places. Half the smokers (50.9%) did not smoke in front of children; a further 17.3% reported that they smoked less. CONCLUSIONS: In this sample there was a relatively low level of awareness of the effects of passive smoking on health and a high prevalence of smoking in the presence of children. Smokers and non-smokers were almost equally divided on whether there should be a law restricting smoking in private cars, although the majority agreed that cars carrying children should be smoke-free. Public health efforts to reduce the harm from passive smoking should be focused on discouraging smoking, in settings in which children are exposed, including private cars when children are passengers.

Attitude to Health↗
PubMed2004

Smoking care provision in smoke-free hospitals in Australia.

BACKGROUND: The study aimed to (1) determine the current routine smoking care that smoke-free public hospitals in New South Wales (NSW), Australia, provide to inpatients who are smokers; (2) determine current strategies supporting such care; and (3) examine the association between smoking care provision and hospital characteristics and support strategies. METHOD: A cross-sectional survey of 169 senior hospital managers was undertaken. Survey items included smoking care practices such as identification of smoking status and provision of nicotine replacement therapy as well as hospital activities such as existence of policies and staff training. Hospital characteristics such as size and geographic location were also collected. RESULTS: Twenty percent of respondents reported provision of minimally 'adequate' smoking care, defined as providing five or more smoking care items to 80% or more of patients. Larger hospitals were significantly less likely to provide adequate smoking care. Nurse training, the existence of signs indicating a smoke-free site and signs indicating location of designated smoking areas were also associated with smoking care provision. The existence of three or more support strategies was associated with smoking care provision. CONCLUSION: Even in the context of a smoke-free hospital site, the majority of inpatients who are smokers receive inadequate smoking care. Considered investment is required for hospitals to implement strategies to institutionalise the routine provision of appropriate smoking care.

Australia↗