文献一覧: Hirokazu Tanaka (著者)

7 0 0 0 OA Widening socioeconomic inequalities in smoking in Japan, 2001-2016

著者: Hirokazu Tanaka Johan P. Mackenbach Yasuki Kobayashi
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20200025, (Released:2020-06-27)
参考文献数: 34
被引用文献数: 27

Background: Japan is one of the world’s largest tobacco epidemic countries but few studies have focused on socioeconomic inequalities. We aimed to examine whether socioeconomic inequalities in smoking have reduced in Japan in recent times.Method: We analyzed data from the Comprehensive Survey of Living Conditions, a large nationally representative survey conducted every three years (n ≈ 700,000 per year) in Japan, during 2001-2016. Age-standardized smoking prevalence was computed based on occupational class and educational level. We calculated smoking prevalence difference (PD) and ratio (PR) of (a) manual workers versus upper non-manual workers and (b) low versus high educational level. The slope index of inequality (SII) and relative index inequality (RII) by educational level were used as inequality measures.Results: Overall smoking prevalence (25-64 years) decreased from 56.0% to 38.4% among men and from 17.0% to 13.0% among women during 2001–2016. The PD between manual and upper non-manual workers (25-64 years) increased from 11.9% (95% confidence interval: 11.0-12.9) to 14.6% (13.5-15.6) during 2001–2016. In 2016, smoking prevalence (25-64 years) for low, middle, and highly educated individuals were 57.8%, 43.9%, and 27.8% for men, and 34.7%, 15.9%, and 5.6% for women, respectively. SII and RII by educational level increased among both sexes. Larger socioeconomic differences in smoking prevalence were observed in younger generations, which suggests that socioeconomic inequalities in smoking evolve in a cohort pattern.Conclusions: Socioeconomic inequalities in smoking widened between 2001 and 2016 in Japan, which indicates that health inequalities will continue to exist in near future.

2023-05-23 12:58:00
7 + 3 Twitter

2 0 0 0 OA Toward Better Utilization of the 2015 Japan Standard Population

著者: Kota Katanoda Hirokazu Tanaka Sayo Tanaka Kayo Togawa
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20230135, (Released:2023-06-17)
参考文献数: 4

2024-01-07 15:22:19
2 + 7 Twitter

2 0 0 0 OA Practical Implications of the Update to the 2015 Japan Standard Population: Mortality Archive From 1950 to 2020 in Japan

著者: Hirokazu Tanaka Sayo Tanaka Kayo Togawa Kota Katanoda
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.33, no.7, pp.372-380, 2023-07-05 (Released:2023-07-05)
参考文献数: 13
被引用文献数: 8

Background: The 2015 Japan Standard Population (JSP) was established in response to changes in the age structure. However, the effects of major updates, especially the recategorization of older age groups, for interpreting various health metrics have not been clarified.Methods: Population data were collected and estimated for older age categories (85–89, 90–94, and ≥95 years). Data on the number of deaths were also collected from the Vital Statistics. We recalculated the all-cause and leading cause-specific age-standardized mortality rate (ASMR) using the 2015 JSP by the direct standardization method for data from 1950 to 2020. We compared ASMRs calculated using the 2015 JSP with those calculated using the 1985 JSP. Pearson’s correlation coefficients were used to evaluate the consistency of mortality trends between the 2015 and 1985 JSPs.Results: The absolute all-cause ASMRs calculated using the 2015 JSP were 2.22–3.00 times higher than those calculated using the 1985 JSP. The ASMR ratios increased gradually over time. While trends in all-cause and cause-specific ASMRs calculated using the 2015 JSP and 1985 JSP were generally highly correlated (Pearson’s correlation coefficient [r] = 0.993 for all-cause), correlations were relatively low for malignant neoplasms (r = 0.720 for men and r = 0.581 for women) and pneumonia/bronchitis (r = 0.543 for men and r = 0.559 for women) due to non-monotonous trends over time and fluctuations in earlier time periods.Conclusion: The effect of introducing the new JSP for interpreting trends in all-cause mortality was considered minimal. However, caution is needed when interpreting trends in some cause-specific mortality rates.

2023-10-17 18:47:38
2 + 2 Twitter

2 0 0 0 OA COVID-19 Vaccine-related Lymphadenopathy in Lung Cancer Patients: a Presentation of Three Cases with Suggestions for Management

著者: Yuuki Kou Nobuhisa Yamazaki Yasuto Sakaguchi Hirokazu Tanaka Makoto Sonobe
出版者: The Japan Lung Cancer Society
雑誌: 肺癌 (ISSN:03869628)
巻号頁・発行日: vol.63, no.2, pp.91-94, 2023-04-20 (Released:2023-04-27)
参考文献数: 7

Background. Axillary lymphadenopathy after COVID-19 vaccination have been frequently reported in the medical literature. This benign reaction can be confused with metastases of thoracic malignancies. We experienced three lung cancer cases with COVID-19 vaccine-related lymphadenopathy. Case presentations. Three patients were included. One was a pre-operative patient, and the others were post-operative patients. All of them were patients with lung cancer and had been vaccinated for COVID-19. They were found to have swelling of the axial lymph nodes on computed tomography several days after undergoing vaccination for COVID-19. Two patients underwent an axial lymph node biopsy. The results of biopsies and close follow-up revealed that none of them actually had metastasis. Conclusions. Invasive examinations should be avoided, but inappropriate upstaging and downstaging may result in miserable outcomes. We herein report three cases with imaging and pathological characteristics.

2023-06-27 21:36:57
2 + 1 Twitter

2 0 0 0 OA Estimation of Socioeconomic Inequalities in Mortality in Japan Using National Census-linked Longitudinal Mortality Data

著者: Hirokazu Tanaka Johan P. Mackenbach Yasuki Kobayashi
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.33, no.5, pp.246-255, 2023-05-05 (Released:2023-05-05)
参考文献数: 28
被引用文献数: 4

Background: We aimed to develop census-linked longitudinal mortality data for Japan and assess their validity as a new resource for estimating socioeconomic inequalities in health.Methods: Using deterministic linkage, we identified, from national censuses for 2000 and 2010 and national death records, persons and deceased persons who had unique personal identifiers (generated using sex, birth year/month, address, and marital status). For the period 2010–2015, 1,537,337 Japanese men and women aged 30–79 years (1.9% in national census) were extracted to represent the sample population. This population was weighted to adjust for confounding factors. We estimated age-standardized mortality rates (ASMRs) by education level and occupational class. The slope index of inequality (SII) and relative index inequality (RII) by educational level were calculated as inequality measures.Results: The reweighted sample population’s mortality rates were somewhat higher than those of the complete registry, especially in younger age-groups and for external causes. All-cause ASMRs (per 100,000 person-years) for individuals aged 40–79 years with high, middle, and low education levels were 1,078 (95% confidence interval [CI], 1,051–1,105), 1,299 (95% CI, 1,279–1,320), and 1,670 (95% CI, 1,634–1,707) for men, and 561 (95% CI, 536–587), 601 (95% CI, 589–613), and 777 (95% CI, 745–808) for women, respectively, during 2010–2015. SII and RII by educational level increased among both sexes between 2000–2005 and 2010–2015, which indicates that mortality inequalities increased.Conclusion: The developed census-linked longitudinal mortality data provide new estimates of socioeconomic inequalities in Japan that can be triangulated with estimates obtained with other methods.

2023-05-11 15:31:04
2 + 5 Twitter

1 0 0 0 OA Toward Better Utilization of the 2015 Japan Standard Population

著者: Kota Katanoda Hirokazu Tanaka Sayo Tanaka Kayo Togawa
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: vol.33, no.10, pp.545, 2023-10-05 (Released:2023-10-05)
参考文献数: 4

2023-10-17 18:46:56
1 + 1 Twitter

1 0 0 0 OA Practical Implications of the Update to the 2015 Japan Standard Population: Mortality Archive From 1950 to 2020 in Japan

著者: Hirokazu Tanaka Sayo Tanaka Kayo Togawa Kota Katanoda
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20220302, (Released:2023-02-11)
参考文献数: 13
被引用文献数: 8

2023-04-13 20:07:59
1 + 1 Twitter

1 0 0 0 OA Estimation of socioeconomic inequalities in mortality in Japan using national census-linked longitudinal mortality data

著者: Hirokazu Tanaka Johan P. Mackenbach Yasuki Kobayashi
出版者: Japan Epidemiological Association
雑誌: Journal of Epidemiology (ISSN:09175040)
巻号頁・発行日: pp.JE20210106, (Released:2021-10-09)
参考文献数: 28
被引用文献数: 4

Background: We aimed to develop census-linked longitudinal mortality data for Japan and assess its validity as a new resource for estimating socioeconomic inequalities in health.Methods: Using deterministic linkage, we identified, from national censuses for 2000 and 2010 and national death records, persons and deceased persons who had unique personal identifiers (generated using sex, birth year/month, address, and marital status). For the period 2010–2015, 1 537 337 Japanese men and women aged 30–79 years (1.9% in national census) were extracted to represent the sample population. This population was weighted to adjust for confounding factors. We estimated age-standardized mortality rates (ASMRs) by education level and occupational class. The slope index of inequality (SII) and relative index inequality (RII) by educational level were calculated as inequality measures.Results: The reweighted sample population’s mortality rates were somewhat higher than those of the complete registry, especially in younger age-groups and for external causes. All-cause ASMRs (per 100 000 person-years) for individuals aged 40–79 years with high, middle, and low education levels were 1078 (95% confidence interval: 1051–1105), 1299 (1279–1320), and 1670 (1634–1707) for men, and 561 (536–587), 601 (589–613), and 777 (745–808) for women, respectively, during 2010–2015. SII and RII by educational level increased among both sexes between 2000–2005 and 2010–2015, which indicates mortality inequalities increased.Conclusions: The developed census-linked longitudinal mortality data provide new estimates of socioeconomic inequalities in Japan that can be triangulated with estimates obtained with other methods.

2022-03-14 15:42:03
1 + 2 Twitter