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  • The fraction of ischaemic heart disease and stroke attributable to smoking in the WHO Western Pacific and South-East Asian regions

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Research paper
The fraction of ischaemic heart disease and stroke attributable to smoking in the WHO Western Pacific and South-East Asian regions
  1. A L C Martiniuk,
  2. C M Y Lee,
  3. T H Lam,
  4. R Huxley,
  5. I Suh,
  6. K Jamrozik,
  7. D F Gu,
  8. M Woodward,
  9. for the Asia Pacific Cohort Studies Collaboration
  1. Writing Committee, Asia Pacific Cohort Studies Collaboration
  1. Correspondence to:
 Alexandra Martiniuk
 The George Institute for International Health, PO Box M201, Missenden Road, Camperdown, NSW, 2050, Australia; amartiniuk{at}thegeorgeinstitute.org

Abstract

Background: Tobacco will soon be the biggest cause of death worldwide, with the greatest burden being borne by low and middle-income countries where 8/10 smokers now live.

Objective: This study aimed to quantify the direct burden of smoking for cardiovascular diseases (CVD) by calculating the population attributable fractions (PAF) for fatal ischaemic heart disease (IHD) and stroke (haemorrhagic and ischaemic) for all 38 countries in the World Health Organization Western Pacific and South East Asian regions.

Design and subjects: Sex-specific prevalence of smoking was obtained from existing data. Estimates of the hazard ratio (HR) for IHD and stroke with smoking as an independent risk factor were obtained from the ∼600 000 adult subjects in the Asia Pacific Cohort Studies Collaboration (APCSC). HR estimates and prevalence were then used to calculate sex-specific PAF for IHD and stroke by country.

Results: The prevalence of smoking in the 33 countries, for which relevant data could be obtained, ranged from 28–82% in males and from 1–65% in females. The fraction of IHD attributable to smoking ranged from 13–33% in males and from <1–28% in females. The percentage of haemorrhagic stroke attributable to smoking ranged from 4–12% in males and from <1–9% in females. Corresponding figures for ischaemic stroke were 11–27% in males and <1–22% in females.

Conclusions: Up to 30% of some cardiovascular fatalities can be attributed to smoking. This is likely an underestimate of the current burden of smoking on CVD, given that the smoking epidemic has developed further since many of the studies were conducted.

  • APCSC, Asia Pacific Cohort Studies Collaboration
  • CVD, cardiovascular disease
  • IHD, ischaemic heart disease
  • LMIC, low and middle-income countries
  • PAF, population attributable fractions
  • HR, hazard ratio
  • WHO, World Health Organization
  • attributable fraction
  • ischaemic heart disease
  • stroke
  • smoking
  • Western-Pacific
  • South-East Asia

https://doi.org/10.1136/tc.2005.013284

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    Footnotes

    • The authors declare no known competing interests.

    • APCSC Executive Committee: Gu DF, Lam TH, Lawes CMM, MacMahon S, Pan WH, Rodgers A, Suh I, Ueshima H, Woodward M.

    • APCSC Participating Studies and Principal Collaborators:Aito Town: A Okayama, H Ueshima; H Maegawa; Akabane: N Aoki, M Nakamura, N Kubo, T Yamada; Anzhen02: ZS Wu; Anzhen: CH Yao, ZS Wu; Australian Longitudinal Study of Aging: G Andrews; Australian National Heart Foundation: TA Welborn; Beijing Aging: Z Tang; Beijing Steelworkers: LS Liu, JX Xie; Blood Donors’ Health: R Norton, S Ameratunga, S MacMahon, G Whitlock; Busselton: MW Knuiman; Canberra-Queanbeyan: H Christensen; Capital Iron and Steel Company: XG Wu; CISCH: J Zhou, XH Yu; Civil Service Workers: A Tamakoshi; CVDFACTS: WH Pan; East Beijing: ZL Wu, LQ Chen, GL Shan; Electricity Generating Authority of Thailand: P Sritara; Fangshan: DF Gu, X.F. Duan; FletcherChallenge: S MacMahon, R Norton, G Whitlock, R Jackson; Guangzhou: YH Li; Guangzhou Occupational: TH Lam, CQ Jiang; Hisayama: M Fujishima, Y Kiyohara, H Iwamoto; Hong Kong: J Woo, SC Ho; Huashan: Z Hong, MS Huang, B Zhou; Kinmen: JL Fuh; Konan: H Ueshima, Y Kita, SR Choudhury; KMIC: I Suh, SH Jee, IS Kim; Melbourne: GG Giles; Miyama: T Hashimoto, K Sakata; Newcastle: A Dobson; Ohasama: Y Imai, T Ohkubo, A Hozawa; Perth: K Jamrozik, M Hobbs, R Broadhurst; Saitama: K Nakachi; Seven Cities: XH Fang, SC Li, QD Yang; Shanghai Factory Workers: ZM Chen; Shibata: H Tanaka; Shigaraki Town: Y Kita, A Nozaki, H Ueshima; Shirakawa: H Horibe, Y Matsutani, M Kagaya; Singapore Heart: K Hughes, J Lee; Singapore NHS92: D Heng, SK Chew; Six Cohorts: BF Zhou, HY Zhang; Tanno/Soubetsu: K Shimamoto, S Saitoh; Tianjin: ZZ Li, HY Zhang; Western Australia AAA Screenees: P Norman, K Jamrozik; Xi’an: Y He, TH Lam; Yunnan: SX Yao.