Abstract
Purpose: Seventy-five percent of epidemiological studies have reported that sedentary behavior is associated with ovarian cancer incidence. Although Japan has one of the most sedentary populations, with median sitting times of 7 h/day, this association has not been investigated. This study aimed to elucidate the association between average daily television (TV) viewing time, which is a major sedentary behavior, and the incidence of ovarian cancer in a large-scale nationwide cohort study in Japan. Methods: A total of 34,758 female participants aged 40–79 years without a history of cancer at baseline were included in the study. The inverse probability weighted competing risk model was used to calculate the hazard ratio (HR) and 95% confidence interval (CI) for the incidence of ovarian cancer. Results: During a median follow-up of 19.4 years, 59 participants developed ovarian cancer (ICD-10: C56), 2,706 participants developed other types of cancer, and 4,318 participants died. Participants who watched TV for ≥ 5 h/day were more likely to develop ovarian cancer than those who watched TV for < 2 h/day (HR 2.15; 95% CI 1.54–2.99). Conclusion: Our findings suggest that reducing the amount of time spent sedentarily may be beneficial for preventing ovarian cancer.
| Original language | English |
|---|---|
| Pages (from-to) | 213-219 |
| Number of pages | 7 |
| Journal | Cancer Causes and Control |
| Volume | 29 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 01-02-2018 |
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All Science Journal Classification (ASJC) codes
- Oncology
- Cancer Research
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Association between average daily television viewing time and the incidence of ovarian cancer : findings from the Japan Collaborative Cohort Study. / JACC Study Group.
In: Cancer Causes and Control, Vol. 29, No. 2, 01.02.2018, p. 213-219.Research output: Contribution to journal › Article
TY - JOUR
T1 - Association between average daily television viewing time and the incidence of ovarian cancer
T2 - findings from the Japan Collaborative Cohort Study
AU - JACC Study Group
AU - Ukawa, Shigekazu
AU - Tamakoshi, Akiko
AU - Mori, Mitsuru
AU - Ikehara, Satoyo
AU - Shirakawa, Toru
AU - Yatsuya, Hiroshi
AU - Iso, Hiroyasu
AU - Tamakoshi, Akiko
AU - Mori, Mitsuru
AU - Yatsuya, Hiroshi
AU - Motohashi, Yutaka
AU - Tsuji, Ichiro
AU - Nakamura, Yoshikazu
AU - Iso, Hiroyasu
AU - Mikami, Haruo
AU - Kurosawa, Michiko
AU - Hoshiyama, Yoshiharu
AU - Tanabe, Naohito
AU - Tamakoshi, Koji
AU - Wakai, Kenji
AU - Tokudome, Shinkan
AU - Suzuki, Koji
AU - Hashimoto, Shuji
AU - Kikuchi, Shogo
AU - Wada, Yasuhiko
AU - Kawamura, Takashi
AU - Suzuki, Koji
AU - Hashimoto, Shuji
AU - Miki, Tsuneharu
AU - Date, Chigusa
AU - Sakata, Kiyomi
AU - Kurozawa, Yoichi
AU - Yoshimura, Takesumi
AU - Fujino, Yoshihisa
AU - Shibata, Akira
AU - Okamoto, Naoyuki
AU - Shio, Hideo
PY - 2018/2/1
Y1 - 2018/2/1
N2 - Purpose: Seventy-five percent of epidemiological studies have reported that sedentary behavior is associated with ovarian cancer incidence. Although Japan has one of the most sedentary populations, with median sitting times of 7 h/day, this association has not been investigated. This study aimed to elucidate the association between average daily television (TV) viewing time, which is a major sedentary behavior, and the incidence of ovarian cancer in a large-scale nationwide cohort study in Japan. Methods: A total of 34,758 female participants aged 40–79 years without a history of cancer at baseline were included in the study. The inverse probability weighted competing risk model was used to calculate the hazard ratio (HR) and 95% confidence interval (CI) for the incidence of ovarian cancer. Results: During a median follow-up of 19.4 years, 59 participants developed ovarian cancer (ICD-10: C56), 2,706 participants developed other types of cancer, and 4,318 participants died. Participants who watched TV for ≥ 5 h/day were more likely to develop ovarian cancer than those who watched TV for < 2 h/day (HR 2.15; 95% CI 1.54–2.99). Conclusion: Our findings suggest that reducing the amount of time spent sedentarily may be beneficial for preventing ovarian cancer.
AB - Purpose: Seventy-five percent of epidemiological studies have reported that sedentary behavior is associated with ovarian cancer incidence. Although Japan has one of the most sedentary populations, with median sitting times of 7 h/day, this association has not been investigated. This study aimed to elucidate the association between average daily television (TV) viewing time, which is a major sedentary behavior, and the incidence of ovarian cancer in a large-scale nationwide cohort study in Japan. Methods: A total of 34,758 female participants aged 40–79 years without a history of cancer at baseline were included in the study. The inverse probability weighted competing risk model was used to calculate the hazard ratio (HR) and 95% confidence interval (CI) for the incidence of ovarian cancer. Results: During a median follow-up of 19.4 years, 59 participants developed ovarian cancer (ICD-10: C56), 2,706 participants developed other types of cancer, and 4,318 participants died. Participants who watched TV for ≥ 5 h/day were more likely to develop ovarian cancer than those who watched TV for < 2 h/day (HR 2.15; 95% CI 1.54–2.99). Conclusion: Our findings suggest that reducing the amount of time spent sedentarily may be beneficial for preventing ovarian cancer.
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U2 - 10.1007/s10552-018-1001-8
DO - 10.1007/s10552-018-1001-8
M3 - Article
VL - 29
SP - 213
EP - 219
JO - Cancer Causes and Control
JF - Cancer Causes and Control
SN - 0957-5243
IS - 2
ER -