Fathers' education level is a protecting factor.
父亲学历是该病的保护因素。
The protecting factor of sub-health was the decreasing of study pressure.
亚健康状态的保护因素为学习压力减小。
Male, group 70 years, group 80 years, family population from 4 to 6 and family population over 7 were risk factors of direct economic burden, II type village was protecting factor.
男性、70～组、80～组、共同居住人数在4～6人以及7人以上为伤害直接经济负担的危险因素，二类农村为其保护因素。
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