To determine whether television (TV) viewing is associated with cardiovascular disease
(CVD) risk, we performed a meta-analysis of currently available prospective cohort
studies. We systematically searched PubMed and Web of Science through April 2019.
Eligible for inclusion in the present meta-analysis was a prospective cohort study
investigating the association of TV viewing time with CVD risk (CVD prevalence, CVD
incidence, cardiovascular events, and cardiovascular mortality). From each study,
adjusted hazard ratios (HRs) of CVD risk were extracted. We separately combined study-specific
estimates for dichotomous, tertile, quartile, and continuous values of TV viewing
time in the random-effects model. The pooled analysis for dichotomous time demonstrated
that CVD risk was significantly higher in the longer than shorter viewing (HR 1.28;
p = 0.02). In the meta-analysis for tertile time, CVD risk was significantly higher
in the longest than shortest tertile (T1) (HR 1.26; p = 0.0006), but there was no
significant difference between the middle tertile and T1 (p = 0.51). The meta-analysis
for quartile time indicated that CVD risk was significantly higher in the longest
than shortest quartile (Q1) (HR 1.32; p = 0.0007), but there were no significant differences
between the second longest quartile and Q1 (p = 0.12) and between the second shortest
quartile and Q1 (p = 0.60). In the meta-analysis for continuous time, longer viewing
was significantly associated with higher CVD risk (HR per 1-h/day increment; 1.06;
p = 0.005). In conclusion, longer TV viewing time is significantly associated with
higher CVD risk.
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Article info
Publication history
Published online: September 06, 2019
Received in revised form:
August 12,
2019
Received:
May 29,
2019
Footnotes
Author contribution: HT contributed to conception, design, acquisition, analysis, and interpretation, drafted manuscript, and agrees to be accountable for all aspects of work ensuring integrity and accuracy. YH and KN contributed to acquisition and analysis. TK contributed to design, analysis, and interpretation. TA contributed to conception, acquisition, analysis, and interpretation, and critically revised manuscript. All authors gave final approval.
Identification
Copyright
© 2019 Elsevier Inc. All rights reserved.
