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Wang HK, Huang CY, Sun YT, Li JY, Chen CH, Sun Y, Liu CH, Lin CH, Chang WL, Lee JT, Sung SF, Yeh PY, Lai TC, Tsai IJ, Lin MC, Lin CL, Wen CP, Hsu CY. Smoking Paradox in Stroke Survivors?: Uncovering the Truth by Interpreting 2 Sets of Data. Stroke 2020; 51:1248-1256. [PMID: 32151234 DOI: 10.1161/strokeaha.119.027012] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Background and Purpose- The observation that smokers with stroke could have better outcome than nonsmokers led to the term "smoking paradox." The controversy of such a complex claim has not been fully settled, even though different case mix was noted. Analyses were conducted on 2 independent data sets to evaluate and determine whether such a paradox truly exists. Methods- Taiwan Stroke Registry with 88 925 stroke cases, and MJ cohort with 541 047 adults participating in a medical screening program with 1630 stroke deaths developed during 15 years of follow-up (1994-2008). Primary outcome for stroke registry was functional independence at 3 months by modified Rankin Scale score ≤2, for individuals classified by National Institutes of Health Stroke Scale score at admission. For MJ cohort, mortality risk by smoking status or by stroke history was assessed by hazard ratio. Results- A >11-year age difference in stroke incidence was found between smokers and nonsmokers, with a median age of 60.2 years for current smokers and 71.6 years for nonsmokers. For smokers, favorable outcome in mortality and in functional assessment in 3 months with modified Rankin Scale score ≤2 stratified by the National Institutes of Health Stroke Scale score was present but disappeared when age and sex were matched. Smokers without stroke history had a ≈2-fold increase in stroke deaths (2.05 for ischemic stroke and 1.53 for hemorrhagic stroke) but smokers with stroke history, 7.83-fold increase, overshadowing smoking risk. Quitting smoking at earlier age reversed or improved outcome. Conclusions- "The more you smoke, the earlier you stroke, and the longer sufferings you have to cope." Smokers had 2-fold mortality from stroke but endured stroke disability 11 years longer. Quitting early reduced or reversed the harms.
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Affiliation(s)
- Hao-Kuang Wang
- From the School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan (H.-K. W., J.-Y. L.).,Department of Neurosurgery, E-Da Hospital, Kaohsiung, Taiwan (H.-K. W.)
| | - Chih-Yuan Huang
- Neurosurgical Service, Department of Surgery, National Cheng Kung University Hospital, Tainan, Taiwan (C.-Y. H.)
| | - Yuan-Ting Sun
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan (Y.-T. S. C.-H. C.).,Stroke Center, National Cheng Kung University Hospital, Tainan, Taiwan (Y.-T. S. C.-H. C.)
| | - Jie-Yuan Li
- From the School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan (H.-K. W., J.-Y. L.).,Department of Neurology, E-Da Hospital/ I-Shou University, Kaohsiung, Taiwan (J.-Y. L.)
| | - Chih-Hung Chen
- Department of Neurology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan (Y.-T. S. C.-H. C.).,Stroke Center, National Cheng Kung University Hospital, Tainan, Taiwan (Y.-T. S. C.-H. C.)
| | - Yu Sun
- Department of Neurology, En Chu Kong Hospital, New Taipei City, Taiwan (Y. S.)
| | - Chung-Hsiang Liu
- Department of Neurology, China Medical University Hospital, Taichung, Taiwan (C.-H. L., C.Y. Hsu)
| | - Ching-Huang Lin
- Department of Neurology, Kaohsiung Veterans General Hospital, Taiwan (C.-H. L.)
| | - Wei-Lun Chang
- Department of Neurology, Show-Chwan Memorial Hospital, Changhua, Taiwan (W.-L. C.)
| | - Jiunn-Tay Lee
- Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan (J.-T. L.)
| | - Sheng-Feng Sung
- Division of Neurology, Department of Internal Medicine, Ditmanson Medical Foundation Chiayi Christian Hospital, Chiayi City, Taiwan (S.-F. S.)
| | - Po-Yen Yeh
- Department of Neurology, St. Martin De Porres Hospital, Chiayi, Taiwan (P.-Y. Y.)
| | - Ta-Chang Lai
- Division of Neurology, Department of Internal Medicine, Cheng Hsin General Hospital, Taipei, Taiwan (T.-C. L.)
| | - I-Ju Tsai
- Management Office for Health Data, China Medical University Hospital, College of Medicine, China Medical University, Taichung, Taiwan (I-J. T., M.-C. L., C.-L. L.)
| | - Mei-Chen Lin
- Management Office for Health Data, China Medical University Hospital, College of Medicine, China Medical University, Taichung, Taiwan (I-J. T., M.-C. L., C.-L. L.)
| | - Cheng-Li Lin
- Management Office for Health Data, China Medical University Hospital, College of Medicine, China Medical University, Taichung, Taiwan (I-J. T., M.-C. L., C.-L. L.)
| | - Chi-Pang Wen
- Graduate Institute of Biomedical Sciences, College of Medicine, China Medical University, Taichung, Taiwan (C.-P. W.).,Department of Medical Research, China Medical University Hospital, Taichung, Taiwan (C.-P. W.).,Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Taiwan (C.-P. W.)
| | - Chung Y Hsu
- Department of Neurology, China Medical University Hospital, Taichung, Taiwan (C.-H. L., C.Y. Hsu)
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Huang HL, Hsu CC, Peng WD, Yen YY, Chen T, Hu CY, Shi HY, Lee CH, Chen FL, Lin PL. Analysis of influential factors associated with the smoking behavior of aboriginal schoolchildren in remote Taiwanese mountainous areas. THE JOURNAL OF SCHOOL HEALTH 2012; 82:318-327. [PMID: 22671948 DOI: 10.1111/j.1746-1561.2012.00705.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
BACKGROUND A disparity in smoking behavior exists between the general and minority populations residing in Taiwan's mountainous areas. This study analyzed individual and environmental factors associated with children's smoking behavior in these areas of Taiwan. METHODS In this school-based study, data on smoking behavior and related factors for mountain-dwelling students were obtained from the 2008 and 2009 Control of School-aged Children Smoking Study surveys. A representative sample (N = 1239) from 26 primary schools was included. The association among 3 groups (never-, former-, and current-smokers) and the potential variables were simultaneously examined using unordered polytomous logistic regression analysis. RESULTS Between 13% and 34% of ever-smokers reported that their first smoking experience was in third grade. More than 70% were found to have bought cigarettes and 87% reported that the tobacco retailers had sold them cigarettes. The significant factors for current-smokers were predisposing factors, ie, attitude toward smoking (adjusted odds ratio [AOR] = 1.21); reinforcing factors, ie, family smoked in front of me (AOR = 2.44), friends smoked in front of me (AOR = 16.24), and school staff smoked in front of me (AOR = 2.98); and enabling factors, ie, cigarette availability and accessibility (AOR = 2.16 and 2.42, respectively). A student's perceived punishment for smoking at school had a positive significant effect on the risk of being former-smokers (AOR = 1.57). CONCLUSION The findings provide a basis for school and community to design and implement effective anti-smoking programs for remote mountain-based students to further reduce youth smoking.
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Affiliation(s)
- Hsiao-Ling Huang
- Department of Oral Hygiene, College of Dental Medicine, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung City 80708, Taiwan
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Huang HL, Chen T, Chen FL, Magnus J, Rice J, Yen YY, Hsu CC. A study of smoking disparity and factors associated with children smoking behavior in the mountain and city schools in Taiwan. THE JOURNAL OF SCHOOL HEALTH 2009; 79:67-73. [PMID: 19187085 DOI: 10.1111/j.1746-1561.2008.00378.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
BACKGROUND While higher smoking prevalences have been better described for adults and adolescents in the mountainous areas than in the plain area in Taiwan, no studies have previously examined whether this disparity begins with children in elementary schools. The purpose of this study was thus designed to explore clustering in smoking behavior among elementary school children attending mountain schools compared to those attending city schools. METHODS This study analyzed data obtained by a survey on smoking behavior collected during the School Smoking Survey Project performed in 13 elementary schools of Taoyuan County, Taiwan. Overall, 1585 third and fourth graders (mean age 8.9 years) participated in the study. A multilevel logistic regression analysis was performed to explore the effects of school location on individual smoking behavior among elementary school children while controlling for individual-level characteristics. RESULTS Overall, 34.9% of the elementary school students in the mountain schools reported having tried cigarette smoking compared to only 9.6% of students from city schools. Students attending mountain schools had a greater likelihood of reporting smoking than students attending city schools after controlling for individual-level characteristics (OR = 2.57, 95% CI = 1.10-5.99). CONCLUSIONS A significant individual clustering in smoking behavior was found among third- and fourth-grade children attending mountain schools. The new findings suggest that the adult geographic smoking disparity begins in elementary school. Interventions aimed at reducing smoking disparity in adults need to target elementary schools in high-risk locations.
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Affiliation(s)
- Hsiao-Ling Huang
- Department of Oral Hygiene, Kaohsiung Medical University, Taiwan, Taiwan.
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Wen CP, Cheng TYD, Tsai MK, Chang YC, Chan HT, Tsai SP, Chiang PH, Hsu CC, Sung PK, Hsu YH, Wen SF. All-cause mortality attributable to chronic kidney disease: a prospective cohort study based on 462 293 adults in Taiwan. Lancet 2008; 371:2173-82. [PMID: 18586172 DOI: 10.1016/s0140-6736(08)60952-6] [Citation(s) in RCA: 693] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Both end-stage renal disease and chronic kidney disease are increasing worldwide; however, the full effect of chronic kidney disease is unknown because mortality risks for all five stages are unavailable. We assessed prevalence and mortality risks for all stages of chronic kidney disease and quantified its attributable mortality in Taiwan. METHODS The cohort consisted of 462 293 individuals aged older than 20 years who participated in a standard medical screening programme since 1994. As of Dec 31, 2006, we identified 14 436 deaths. Chronic kidney disease was determined by glomerular filtration rate and urinary protein. We estimated national prevalence in Taiwan from the cohort by adjusting age and educational levels. Hazard ratios (HRs) were calculated with Cox proportionate hazards model. We calculated mortality attributable to chronic kidney disease for national population and for low socioeconomic status. FINDINGS The national prevalence of chronic kidney disease was 11.93% (95% CI 11.66-12.28), but only 3.54% (3.37-3.68) of participants in the cohort were aware of their disorder. Prevalence was substantially higher in the group with low socioeconomic status than in the high status group (19.87% [19.84-19.91] vs 7.33% [7.31-7.35]). 56 977 (12%) of cohort participants had chronic kidney disease; those with disease had 83% higher mortality for all cause (HR 1.83 [1.73-1.93]) and 100% higher for cardiovascular diseases (2.00 [1.78-2.25]), in a cohort that was observed for 13 years with median follow-up of 7.5 years (IQR 4.0-10.1). 10.3% (95% CI 9.57-11.03) of deaths in the entire population were attributable to chronic kidney disease, but 17.5% (16.27-18.67) of deaths in the low socioeconomic status population. 2350 (39%) deaths occurred before 65 years of age in those with chronic kidney disease. Regular users of Chinese herbal medicines had a 20% (odds ratio 1.20 [1.16-1.24]) increased risk of developing chronic kidney disease. INTERPRETATION The high prevalence of chronic kidney disease and its associated all-cause mortality, especially in people with low socioeconomic status, make reduction of this disorder a public-health priority. Promotion of its recognition through the general public knowing their glomerular filtration rate and testing their urine is crucial to reduce premature deaths from all causes and to attenuate this global epidemic.
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Affiliation(s)
- Chi Pang Wen
- Center for Health Policy Research and Development, National Health Research Institutes, Zhunan, Taiwan.
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Chuang YC, Li YS, Wu YH, Chao HJ. A multilevel analysis of neighborhood and individual effects on individual smoking and drinking in Taiwan. BMC Public Health 2007; 7:151. [PMID: 17623053 PMCID: PMC1955439 DOI: 10.1186/1471-2458-7-151] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2006] [Accepted: 07/10/2007] [Indexed: 12/04/2022] Open
Abstract
Background We assessed direct effects of neighborhood-level characteristics and interactive effects of neighborhood-level characteristics and individual socioeconomic position on adult smoking and drinking, after consideration of individual-level characteristics in Taiwan. Methods Data on individual sociodemographic characteristics, smoking, and drinking were obtained from Taiwan Social Change Survey conducted in 1990, 1995, and 2000. The overall response rate was 67%. A total of 5883 women and men aged over 20 living in 434 neighborhoods were interviewed. Participants' addresses were geocoded and linked with Taiwan census data for measuring neighborhood-level characteristics including neighborhood education, neighborhood concentration of elderly people, and neighborhood social disorganization. The data were analyzed with multilevel binomial regression models. Results Several interaction effects between neighborhood characteristics and individual socioeconomic status (SES) were found in multilevel analyses. Our results indicated that different neighborhood characteristics led to different interaction patterns. For example, neighborhood education had a positive effect on smoking for low SES women, in contrast to a negative effect on smoking for high SES women. This result supports the hypothesis of "relative deprivation," suggesting that poor people living in affluent neighborhoods suffer from relative deprivation and relative standing. On the other hand, neighborhood social disorganization has positive effects on drinking for low SES individuals, but not for high SES individuals. These interactive effects support the hypothesis of the double jeopardy theory, suggesting that living in neighborhoods with high social disorganization will intensify the effects of individual low SES. Conclusion The findings of this study show new evidence for the effects of neighborhood characteristics on individual smoking and drinking in Taiwan, suggesting that more studies are needed to understand neighborhood effects in Asian societies.
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Affiliation(s)
- Ying-Chih Chuang
- Graduate Institute of Public Health, Taipei Medical University, 250 Wu-Hsing St., Taipei, Taiwan
| | - Yu-Sheng Li
- Graduate Institute of Public Health, Taipei Medical University, 250 Wu-Hsing St., Taipei, Taiwan
| | - Yi-Hua Wu
- Graduate Institute of Public Health, Taipei Medical University, 250 Wu-Hsing St., Taipei, Taiwan
| | - Hsing Jasmine Chao
- Graduate Institute of Public Health, Taipei Medical University, 250 Wu-Hsing St., Taipei, Taiwan
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