Abstract
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Population
ageing and proposals for delaying retirement in many countries have led to
greater interest in understanding the potential long-term associations
between retirement and cardiovascular disease (CVD) and CVD risk factors.
Most relevant studies were conducted in Western countries. The cross-national
comparison between China and England conducted by this thesis revealed that
China has a much earlier retirement age than England, and the cross-sectional
associations of retirement and CVD and CVD risk factors are different in the
Chinese context, and these associations are moderated by personal and family
characteristics in both countries. It is important to consider reverse
causality when investigating the health effects of retirement. Thus, this
thesis assessed the longitudinal associations between retirement and CVD risk
factors over a 17-year period both before and after retirement among 1,084
people who participated in the China Health and Nutrition Survey at least
once prior to and once after the year in which they retired. Piecewise
models, centred at the year of retirement, were applied. Retirement was
accompanied by a reduction in diastolic blood pressure, a slowdown in the
increase of both systolic blood pressure and waist circumference, and a reduction
in the probability of being a heavy drinker. Results for heavy smoking
mirrored those for heavy drinking, but only reached borderline statistical
significance. The association between retirement and blood pressure was
stronger for men, for urban dwellers, and for those who have a non-working
spouse. No significant association with body mass index was found. The
reduced probability of being a heavy drinker after retirement explained some
of the association between retirement and blood pressure. This study suggests
that retirement may be beneficial in the Chinese context. Better working
environment and flexible schedules are needed for an ageing workforce, given
plans to raise the retirement age in China.
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