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1.
Ann Behav Med ; 58(1): 56-66, 2024 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-37738629

RESUMEN

BACKGROUND: Cigarette pack inserts with messages on cessation benefits and advice are a promising labeling policy that may help promote smoking cessation. PURPOSE: To assess insert effects, with and without accompanying pictorial health warning labels(HWLs), on hypothesized psychosocial and behavioral outcomes. METHODS: We conducted a 2 × 2 between-subject randomized trial (inserts with efficacy messages vs. no inserts; large pictorial HWLs vs. small text HWLs), with 367 adults who smoked at least 10 cigarettes a day. Participants received a 14-day supply of their preferred cigarettes with packs modified to reflect their experimental condition. Over 2 weeks, we surveyed participants approximately 4-5 times a day during their smoking sessions, querying feelings about smoking, level of worry about harms from smoking, self-efficacy to cut down on cigarettes, self-efficacy to quit, hopefulness about quitting, and motivation to quit. Each evening, participants reported their perceived susceptibility to smoking harms and, for the last 24 hr, their frequency of thinking about smoking harms and cessation benefits, conversations about smoking cessation or harms, and foregoing or stubbing out cigarettes before they finished smoking. Mixed-effects ordinal and logistic models were estimated to evaluate differences between groups. RESULTS: Participants whose packs included inserts were more likely than those whose packs did not include inserts to report foregoing or stubbing out of cigarettes (OR = 2.39, 95% CI = 1.36, 4.20). Otherwise, no statistically significant associations were found between labeling conditions and outcomes. CONCLUSIONS: This study provides some evidence, albeit limited, that pack inserts with efficacy messages can promote behaviors that predict smoking cessation attempts.


Cigarette pack inserts (small leaflets inside packs) with messages about quitting benefits and tips to quit may promote smoking cessation. We randomly assigned 367 adult smokers to one of four groups: control group with small health warning labels (HWLs) on the side of packs; inserts with cessation messages and small HWLs; large picture HWLs showing health effects from smoking; inserts and large picture HWLs. Participants received a 14-day supply of their preferred cigarettes in packs that reflected their assigned group. Over 2 weeks, we surveyed participants 4­5 times a day during times when they smoked, asking their feelings about smoking and smoking-related harms, confidence to reduce cigarettes and quit, hopefulness about quitting, and motivation to quit. Each evening, participants reported on the prior 24 hr: how often they thought about smoking harms and cessation benefits; conversations about smoking cessation or harms; and foregoing or stubbing out cigarettes before they finished smoking. People whose packs had inserts (with or without picture HWLs) were more likely than those whose packs did not include inserts (control group or picture HWLs only) to report foregoing or stubbing out of cigarettes. This study provides some evidence that inserts with cessation messages may promote smoking cessation.


Asunto(s)
Cese del Hábito de Fumar , Productos de Tabaco , Adulto , Humanos , Cese del Hábito de Fumar/psicología , Fumar/terapia , Fumar/psicología , Fumar Tabaco , Conductas Relacionadas con la Salud , Etiquetado de Productos , Prevención del Hábito de Fumar
2.
Nicotine Tob Res ; 26(2): 220-228, 2024 Jan 22.
Artículo en Inglés | MEDLINE | ID: mdl-37648272

RESUMEN

INTRODUCTION: This study aimed to assess whether two established psychosocial predictors of smoking abstinence, nicotine dependence and time-discounting, also apply to a population of predominantly cigarette light smokers, which is the dominant pattern of smoking in countries like Mexico. Relatively infrequent smoking is increasingly prevalent, yet still harmful, making it important to understand the predictors of cessation in this population. AIMS AND METHODS: Mexican adult smokers recruited from an online consumer panel were surveyed every 4 months between November 2018 and July 2020. We considered respondents who reported a quit attempt in between surveys (n = 1288). Dependence was measured with a 10-item version of the Wisconsin Inventory of Smoking Dependence Motives (WISDM). Time-discounting was assessed with five branching questions about hypothetical reward scenarios. Logistic models regressed sustained quit attempts (≥30 days of abstinence) at time t + 1 on study variables at time t. RESULTS: We found strong interitem reliability (α = 0.92) and intraindividual consistency of our brief WISDM (ρ = 0.68), but moderate intraindividual consistency of the time-discounting measure (ρ = 0.48). Forty-eight percent of the sample reported sustained quit attempts, and 79% were non-daily or light daily smokers (≤5 cigarettes per day). Smokers with higher WISDM-10 had lower odds of sustained quitting and this result remained when controlling for smoking frequency and the Heaviness of Smoking Index (adjusted odds ratio [AOR] = 0.768). Time-discounting was unassociated with sustained quitting. CONCLUSIONS: Our findings suggest that a brief, 10-item multidimensional measure of dependence is useful for predicting sustained quitting in a context of relatively light smoking; time-discounting appears less relevant, although our results are not conclusive because of the low test-retest reliability of our measure. IMPLICATIONS: Given the increase in non-daily and light daily cigarette smoking in many countries, including in Mexico, and the health risks this still poses, it is important to understand the predictors of cessation among relatively light smokers. The WISDM-10 multidimensional measure seems to be a good instrument to assess dependence and predict successful quitting in this population, and possibly more appropriate than physical dependence measures. As such, it could help design and target more suitable cessation treatments for non-daily and daily light cigarette smokers. While this study did not find time-discounting to be a relevant predictor of smoking abstinence, future studies should explore other measures.


Asunto(s)
Conductas Relacionadas con la Salud , Fumadores , Adulto , Humanos , Estudios Longitudinales , Reproducibilidad de los Resultados , Fumar/epidemiología
3.
Health Educ Res ; 38(6): 548-562, 2023 Dec 11.
Artículo en Inglés | MEDLINE | ID: mdl-37450334

RESUMEN

While many countries require prominent pictorial health warning labels (PHWLs) on the outside of cigarette packs to communicate the harms of smoking, there is evidence that cigarette pack inserts that contain efficacy messages may enhance the effectiveness of PHWLs. The US Food and Drug Administration (FDA) has regulatory authority to communicate with smokers through inserts. While current labeling regulations do not require inclusion of inserts, the FDA could implement them in the future. This study assesses US smokers' perceptions of cigarette package inserts at the conclusion of a two-week randomized trial on cigarette labeling where half of participants were exposed to insert messages (two response-efficacy messages and two self-efficacy messages) in their packs. Participants (n = 359) completed a 30- to 60-min interview with both quantitative and qualitative assessments, including measures of recall and perceived message effectiveness (PME) for specific inserts. Correlates of recall and PME were estimated using mixed-effects regression models. Qualitative responses to PME items were analyzed using thematic analysis. Response-efficacy messages had higher PME and recall than self-efficacy messages. People had diverse responses to the inserts, including that they were positive, thought-provoking, and helpful. Reactions to and perceptions of the inserts indicate potential benefits of integrating efficacy messages into labeling policies.


Asunto(s)
Cese del Hábito de Fumar , Productos de Tabaco , Adulto , Humanos , Fumadores , Cese del Hábito de Fumar/métodos , New York , South Carolina , Prevención del Hábito de Fumar/métodos , Etiquetado de Productos/métodos
4.
Front Glob Womens Health ; 4: 1124132, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37066038

RESUMEN

Background: On June 24, 2022, The U.S. Supreme Court overturned Roe v. Wade, leaving abortion legislation entirely up to states. However, anti-abortion activists and legislators have organized for decades to prevent abortion access through restrictive state-level legislation. In 2019, South Carolina legislators proposed a bill criminalizing abortion after 6 weeks gestation, before most people know they are pregnant. The current study examines the anti-abortion rhetoric used in legislative hearings for this extreme abortion restriction in South Carolina. By examining the arguments used by anti-abortion proponents, we aim to expose their misalignment with public opinion on abortion and demonstrate that their main arguments are not supported by and often are counter to medical and scientific evidence. Methods: We qualitatively analyzed anti-abortion discourse used during legislative hearings of SC House Bill 3020, The South Carolina Fetal Heartbeat Protection from Abortion Act. Data came from publicly available videos of legislative hearings between March and November 2019, during which members of the public and legislators testified for and against the abortion ban. After the videos were transcribed, we thematically analyzed the testimonies using a priori and emergent coding. Results: Testifiers (Anti-abortion proponents) defended the ban using scientific disinformation and by citing advances in science to redefine "life." A central argument was that a fetal "heartbeat" (i.e., cardiac activity) detected at 6 weeks gestation indicates life. Anti-abortion proponents used this to support their argument that the 6-week ban would "save lives." Other core strategies compared anti-abortion advocacy to civil rights legislation, vilified supporters and providers of abortion, and framed people who get abortions as victims. Personhood language was used across strategies and was particularly prominent in pseudo-scientific arguments. Discussion: Abortion restrictions are detrimental to the health and wellbeing of people with the potential to become pregnant and to those who are pregnant. Efforts to defeat abortion bans must be grounded in a critical and deep understanding of anti-abortion strategies and tactics. Our results reveal that anti-abortion discourse is extremely inaccurate and harmful. These findings can be useful in developing effective approaches to countering anti-abortion rhetoric.

5.
Nutr J ; 22(1): 15, 2023 03 07.
Artículo en Inglés | MEDLINE | ID: mdl-36879315

RESUMEN

BACKGROUND: There is ample evidence that considers diet as an important factor in the prevention of gestational diabetes mellitus (GDM). The aim of this review is to synthesise the existing evidence on the relationship between GDM and maternal dietary components. METHODS: We performed a systematic bibliographic search in Medline, Latin American and Caribbean Health Sciences Literature (Lilacs) and the Latin American Nutrition Archive (ALAN) of regional and local literature, limiting the searches to observational studies published between 2016 and 2022. Search terms related to nutrients, foods, dietary patterns and the relationship to GDM risk were used. The review included 44 articles, 12 of which were from America. The articles considered different topics about maternal dietary components as follows: 14 are about nutrient intake, 8 about food intake, 4 combined nutrient and food analysis and 18 about dietary patterns. RESULTS: Iron, processed meat and a low carbohydrate diet were positively associated with GDM. Antioxidant nutrients, folic acid, fruits, vegetables, legumes and eggs were negatively associated with GDM. Generally, western dietary patterns increase GDM risk, and prudent dietary patterns or plant-based diets decrease the risk. CONCLUSIONS: Diet is considered one of the causes of GDM. However, there is no homogeneity in how people eat nor in how researchers assess diet in different contextual conditions of the world.


Asunto(s)
Diabetes Gestacional , Humanos , Femenino , Embarazo , Diabetes Gestacional/epidemiología , Verduras , Dieta Baja en Carbohidratos , Dieta Occidental , Promoción de la Salud
6.
J Athl Train ; 57(8): 717-732, 2022 Aug 01.
Artículo en Inglés | MEDLINE | ID: mdl-36356618

RESUMEN

Collegiate athletic programs are increasingly adding nutrition services to interdisciplinary sports medicine and sports performance departments in response to scientific evidence highlighting nutrition's integral role in supporting athletic performance and overall health. Registered Dietitian Nutritionists (RDNs) specializing in sports dietetics (ie, sports RDNs) and credentialed Board-certified Specialists in Sports Dietetics (CSSDs) are the preferred nutrition service providers for these programs. Their extensive training and proficiency in medical nutrition therapy, education and behavioral counseling, food-service management, exercise physiology, physical performance, and administration, as defined by the "Standards of Practice and "Standards of Professional Performance" for Registered Dietitian Nutritionists in Sports Nutrition and Human Performance," make these practitioners uniquely qualified to deliver the breadth of care required in the collegiate setting. Therefore, this document, guided by a multidisciplinary panel, introduces 4 sports nutrition models through which any collegiate athletic program can deliver sports RDN-directed nutrition services. In each model, the most effective staffing and scope of service are indicated and reviewed. In addition, recommended organizational structures for sports RDNs are provided that best support the delivery of the model's nutrition services in a variety of collegiate athletic programs and organizational settings. Lastly, future research initiatives and nutrition interventions to help improve the standard of care through these sport nutrition models are explored.


Asunto(s)
Dietética , Nutricionistas , Deportes , Humanos , Nutricionistas/educación , Academias e Institutos , Competencia Clínica , Dietética/educación
7.
BMC Health Serv Res ; 22(1): 236, 2022 Feb 21.
Artículo en Inglés | MEDLINE | ID: mdl-35189864

RESUMEN

BACKGROUND: Addressing questions surrounding the feasibility of embedding exercise service units in clinical oncology settings is imperative for developing a sustainable exercise-oncology clinical pathway. We examined available literature and offered practical recommendations to support evidence-based practice, policymaking, and further investigations. METHODS: Four thousand eight hundred sixty-three unique records identified in Embase, CINAHL, MEDLINE, Web of Science Core Collection, and ProQuest (Health and Medicine) were screened for studies that recruited cancer patients, assessed the co-location of exercise service and cancer treatment units, and reported findings on service implementation. Evidence from six studies providing data from over 30 programs was integrated using narrative synthesis. RESULTS: Service implementation was relatively modest across the included studies. Exercise services were delivered by physiotherapists, exercise physiologists, and kinesiologists and funded mainly through grants and private donations, with staff salaries accruing as the major expense. Service penetration, adoption, and acceptability were generally low. However, studies recorded high clinician/patient satisfaction. Major barriers to service integration were limited funding, lack of detailed implementation plan, and low organizational buy-in. Common reasons for non-utilization, missed sessions, and dropouts were lack of interest, unwellness, hospital readmission, disease progression, and adverse skeletal events. CONCLUSION: Implementing exercise services in clinical oncology settings seems an effective approach for increasing access to exercise-based rehabilitation for individuals on cancer treatment. While this model appears feasible for patients/clinicians, efforts are required to optimize service integration both in the short and long term. Key priorities include seeking [local] actions to address issues relating to funding and organizational buy-in. Important considerations may include developing an implementation plan to guide the implementation process, expanding the patient core management team to include staff from the exercise rehabilitation unit, and exploring the role of patient feedback in increasing clinician participation (e.g., treating oncologists and nurses) in the referral process. Future research should consider effective strategies to promote patients' sense of self-efficacy and behavioral control and, further, the place of audit and feedback in improving exercise service delivery and overall service implementation.


Asunto(s)
Ejercicio Físico , Satisfacción del Paciente , Humanos , Oncología Médica , Salarios y Beneficios
8.
Artículo en Inglés | MEDLINE | ID: mdl-34682643

RESUMEN

Mexico is one of the countries most affected by COVID-19. Studies have found that smoking behaviors have been impacted by the pandemic as well; however, results have varied across studies, and it remains unclear what is causing the changes. This study of an open cohort of smokers recruited from a consumer panel (n = 2753) examined changes in cigarettes per day (CPD), daily vs. non-daily smoking, recent quit attempts, perceived stress, depression, and perceived severity of COVID-19 at two points during the pandemic: March and July 2020. Differences in CPD between waves were estimated with Poisson regression using generalized estimating equations (GEE). Differences in perceived stress were estimated with linear regression using GEE, and differences in recent quit attempts, depression, and perceived severity of COVID-19 were estimated using separate logistic regression GEE models. Rates of depression were higher in July compared to March (AOR = 1.55, 95% C.I. 1.31-1.85), and the likelihood of recent quit attempt was lower in July compared to March (AOR = 0.85, 95% C.I. 0.75-0.98). There was no statistically significant change in CPD, daily smoking, or perceived stress. Perceived COVID-19 severity for oneself increased significantly (AOR: 1.24, 95% C.I. 1.02-1.52); however, the perceived COVID-19 severity for smokers remained constant. Our study suggests that as the COVID-19 pandemic expanded in Mexico, smoking frequency remained stable, and quit attempts decreased, even as adult smokers increasingly perceived infection with COVID-19 for themselves as severe. These results can aid in the development of health communication strategies to educate smokers about their risk for COVID-19, potentially capitalizing on concerns that stem from this syndemic of communicable and smoking-related non-communicable disease.


Asunto(s)
COVID-19 , Cese del Hábito de Fumar , Adulto , Humanos , Salud Mental , México/epidemiología , Pandemias , Percepción , SARS-CoV-2 , Fumadores , Fumar/epidemiología
9.
Mar Pollut Bull ; 169: 112494, 2021 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-34051518

RESUMEN

Catchment impacts on downstream ecosystems are difficult to quantify, but important for setting management targets. Here we compared 12 years of monitoring data of seagrass area and biomass in Cleveland Bay, northeast Australia, with discharge and associated sediment loads from nearby rivers. Seagrass biomass and area exhibited different trajectories in response to river inputs. River discharge was a slightly better predictor of seagrass indicators than total suspended solid (TSS) loads, indicating that catchment effects on seagrass are not restricted to sediment. Linear relationships between Burdekin River TSS loads delivered over 1-4 years and seagrass condition in Cleveland Bay generated Ecologically Relevant Targets (ERT) for catchment sediment inputs. Our predicted ERTs were comparable to those previously estimated using mechanistic models. This study highlights the challenges of linking catchment inputs to condition of downstream ecosystems, and the importance of integrating a variety of metrics and approaches to increase confidence in ERTs.


Asunto(s)
Ecosistema , Sedimentos Geológicos , Australia , Monitoreo del Ambiente , Ríos
10.
Tob Regul Sci ; 7(3): 203-209, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-35546961

RESUMEN

Objectives: Canada is the only country that currently uses cigarette pack inserts to communicate health messages to smokers, including tips to quit. Messages about strategies for quitting smoking are also central to the US Food and Drug Administration's (FDA) Every Try Counts (ETC) campaign. This study assessed US smokers' responses to Canadian and ETC-based messages formatted for pack inserts. Methods: US adult smokers (N = 524) were recruited from an online consumer panel and rated 8 insert messages: 4 based on Canadian inserts and 4 based on ETC. Participants randomly viewed each message accompanied by an image of either a person or a symbolic representation of the topic. Participants rated the perceived effectiveness (PE) of each message. Paired t-tests were used to assess mean differences in PE across topics, image types, and quit intentions. Results: ETC messages were consistently rated as more effective than Canadian messages regardless of quit intentions. Image types did not significantly influence PE. Conclusions: Messages from ETC are perceived as more effective than messages used in Canada. The FDA has the authority to communicate with smokers through inserts and should consider adopting inserts to promote smoking cessation.

11.
Drug Alcohol Depend ; 218: 108406, 2021 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-33246709

RESUMEN

BACKGROUND: The widespread popularity of e-cigarettes, particularly JUUL, has led to an alarming increase in teen nicotine use, reversing a 40-year trend. One key question is how sensitive teens' demand for JUUL is to changes in price. METHODS: We estimate the price elasticity of demand using results from an experimental auction where teen nicotine users and nonusers bid on a JUUL kit. RESULTS: We find that a 10 % increase in price leads to as much as a 24 % reduction in JUUL demand among teens using nicotine, and as much as a 45 % reduction among teens not currently using nicotine. The teens in our study were more price sensitive than older adults who took part in a similar earlier study. CONCLUSIONS: From a public health standpoint, these are promising results. High e-cigarette taxes may dissuade relatively few older adult cigarette smokers from switching to e-cigarettes, but at the same time be highly effective at preventing teens from becoming e-cigarette users in the first place.


Asunto(s)
Sistemas Electrónicos de Liberación de Nicotina/estadística & datos numéricos , Adolescente , Anciano , Elasticidad , Sistemas Electrónicos de Liberación de Nicotina/economía , Femenino , Humanos , Masculino , Nicotina , Salud Pública , Fumadores , Cese del Hábito de Fumar/métodos , Impuestos , Productos de Tabaco
12.
Am J Health Behav ; 44(4): 473-487, 2020 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-32553028

RESUMEN

Objectives: Conversations about pictorial cigarette health warning labels (HWLs) encourage quit attempts, and prior research suggests prevalence of these conversations varies by ethnicity. We assessed the frequency of conversations about text-only HWLs among Latino and non-Latino white smokers and the relationship between conversations and subsequent quit attempts. Methods: Latino and non-Latino white adult smokers in the United States (N = 4403) were surveyed every 4 months over 2 years. Surveys queried smoking behaviors, recent quit attempts, HWL responses, including HWL conversations, and socio-demographic variables. Negative binomial generalized estimating equation (GEE) models regressed the frequency of HWL conversations on study variables. Logistic GEE models regressed quit attempts at follow-up surveys on responses from the prior wave, including frequency of HWL conversations and their interaction with ethnicity. Results: Spanish preference Latinos reported the most HWL conversations (85%), followed by English preference Latinos (59%), and non-Latino Whites (35%). More frequent HWL conversations predicted subsequent quit attempts (AOR = 1.74, 95% CI = 1.32, 2.30), but ethnicity did not moderate this effect. Conclusions: Latinos appear to talk more frequently about HWLs than non-Latino Whites but are no more likely to quit as a result. Cessation campaigns should use messages that encourage conversations about quitting.


Asunto(s)
Actitud Frente a la Salud , Fumar Cigarrillos/etnología , Comunicación , Hispánicos o Latinos/estadística & datos numéricos , Etiquetado de Productos , Cese del Hábito de Fumar/etnología , Adulto , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Estados Unidos/etnología , Población Blanca/etnología , Adulto Joven
13.
Artículo en Inglés | MEDLINE | ID: mdl-29415523

RESUMEN

This study assessed smokers' responses to different smoking cessation topics and imagery for cigarette package inserts. Adult smokers from Canada (n = 1000) participated in three discrete choice experiments (DCEs): DCE 1 assessed five cessation benefit topics and five imagery types; DCE 2 assessed five messages with tips to improve cessation success and five imagery types; DCE 3 assessed four reproductive health benefits of cessation topics and four imagery types. In each DCE, participants evaluated four or five sets of four inserts, selecting the most and least motivating (DCEs 1 & 3) or helpful (DCE 2) for quitting. Linear mixed models regressed choices on insert and smoker characteristics. For DCE 1, the most motivating messages involved novel disease topics and imagery of younger women. For DCE 2, topics of social support, stress reduction and nicotine replacement therapy were selected as most helpful, with no differences by imagery type. For DCE 3, imagery influenced choices more than topic, with imagery of a family or a mom and baby selected as most motivating. Statistically significant interactions for all three experiments indicated that the influence of imagery type on choices depended on the message topic. Messages to promote smoking cessation through cigarette pack inserts should consider specific combinations of message topic and imagery.


Asunto(s)
Conducta de Elección , Promoción de la Salud/métodos , Etiquetado de Productos/métodos , Fumadores/psicología , Cese del Hábito de Fumar/psicología , Fumar/psicología , Productos de Tabaco , Adolescente , Adulto , Canadá , Femenino , Política de Salud , Humanos , Modelos Lineales , Masculino , Persona de Mediana Edad , Motivación , Reproducibilidad de los Resultados , Cese del Hábito de Fumar/métodos , Adulto Joven
14.
Tob Induc Dis ; 16: 44, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-31516442

RESUMEN

INTRODUCTION: Observational studies indicate that cigarette package inserts with efficacy messages about the benefits of quitting (i.e. response efficacy) and recommendations for successful cessation increase smokers' self-efficacy to quit and promote sustained cessation. However, the effects of inserts with such efficacy messages have not been studied using experimental designs. This study used ecological momentary assessment (EMA) to assess smokers' responses to efficacy inserts. METHODS: In a randomized case-crossover study among smokers from the United States (n=23), participants received a one-week supply of cigarettes with efficacy inserts and a one-week supply without any inserts, and were randomized to use the packs with inserts on either the first or second week of the study. For 14 consecutive days, participants used a smartphone to answer brief surveys on cessation-related variables during smoking sessions and at the beginning of each day. Multilevel mixed-effects linear and logistic regression models compared responses during the insert period to those of the non-insert period. RESULTS: The insert period was associated with greater desire to quit (b=0.21, p=0.012), motivation to quit (b=0.18, p=0.001), self-efficacy to cut down (b=0.26, p<0.001) and to quit (b=0.28, p<0.000), and response efficacy/perceived benefits of quitting (b=0.13, p=0.012). Insert exposure was not significantly associated with forgoing cigarettes (OR=1.9, p=0.2). CONCLUSIONS: Results from this EMA study suggest that inserts with efficacy messages may promote determinants of smoking cessation. This is consistent with observational research in Canada, which is the only country to use inserts with efficacy messages as well as pictorial warnings about smoking risks on the outside of packs. Future studies should assess the extent to which efficacy inserts can not only be used to communicate health information to smokers but also work in synergy with pictorial warnings.

15.
JMIR Mhealth Uhealth ; 5(12): e189, 2017 Dec 13.
Artículo en Inglés | MEDLINE | ID: mdl-29237580

RESUMEN

BACKGROUND: Smoking is the leading cause of preventable death in the world today. Ecological research on smoking in context currently relies on self-reported smoking behavior. Emerging smartwatch technology may more objectively measure smoking behavior by automatically detecting smoking sessions using robust machine learning models. OBJECTIVE: This study aimed to examine the feasibility of detecting smoking behavior using smartwatches. The second aim of this study was to compare the success of observing smoking behavior with smartwatches to that of conventional self-reporting. METHODS: A convenience sample of smokers was recruited for this study. Participants (N=10) recorded 12 hours of accelerometer data using a mobile phone and smartwatch. During these 12 hours, they engaged in various daily activities, including smoking, for which they logged the beginning and end of each smoking session. Raw data were classified as either smoking or nonsmoking using a machine learning model for pattern recognition. The accuracy of the model was evaluated by comparing the output with a detailed description of a modeled smoking session. RESULTS: In total, 120 hours of data were collected from participants and analyzed. The accuracy of self-reported smoking was approximately 78% (96/123). Our model was successful in detecting 100 of 123 (81%) smoking sessions recorded by participants. After eliminating sessions from the participants that did not adhere to study protocols, the true positive detection rate of the smartwatch based-detection increased to more than 90%. During the 120 hours of combined observation time, only 22 false positive smoking sessions were detected resulting in a 2.8% false positive rate. CONCLUSIONS: Smartwatch technology can provide an accurate, nonintrusive means of monitoring smoking behavior in natural contexts. The use of machine learning algorithms for passively detecting smoking sessions may enrich ecological momentary assessment protocols and cessation intervention studies that often rely on self-reported behaviors and may not allow for targeted data collection and communications around smoking events.

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