Mahjong protects from depression

Prevalence of depressive symptoms and its related factors among China’s older adults in 2016

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Commentary

First, the impact factor of this journal (nealy the authority of this journal) is 4.88.

This is very high impact factor.

Why this paper is accept to published from this journal??

Maybe, this paper has very big samples.

In this study, 19420 people who are over 60 years old are analyzed.

They were screened  by Patient Health Questionnaire-9 

This score is from 0 to 27  and in this study,  19420 people assigned below two group according the test.

0~4  →　Non-DS (depression symptom)　group

5~27→　DS  group.

And analyzed the relationship with a lot of  items.

Result is below

People who play Mahjong and card game usually were not likely to have DS. (P-value<0.01) .

The ratio of Non-DS group with playing usually is smaller.

Other factors that people are not likely to have DS are 

・higher education 

・greater BMI

・living in urban areas

Conversely, the factors that people likely to have DS are

・Daily alchohl consumption

・Disturbed sleep 

・Chronic diseases

・Greater age

・Impaired cognition

・Poor ADL performance

 ・Insufficient social communication

So you should play mahjong in order to avoid suffer depression.

But never play  all night long and with drinking alchohl.