Aim To assess the prevalence of isolated systolic hypertension(ISH) and correlative risk factors among rural adult groups in Liaoning province,and provide scientific basis for preventing and intervening measurement of hypertension in the rural area for government.MethodsThrough cluster multistage and random sampling to a resident(≥5 years) group of 30 214 people aged ≥35 years old in seven small towns of Liaoning province,the blood pressure measurement and risk factors investigation were done by trained doctors.ResultsThe prevalence of isolated systolic hypertension for aged ≥35 years in rural of Liaoning was 11.92%,and the standardized prevalence was 12.00%.The prevalence of isolated systolic hypertension for male and female were 11.42% and 12.42%,the standardized prevalence were 11.29% and 12.80% respectively,the difference of prevalence in the different sex groups was significant(p<0.01).The variation range of isolated systolic hypertension prevalence was from 7.81% to 15.04% in different small towns.With the age increasing,the prevalence was obviously up.By Logistic regression,risk factors of age,sex,race,body mass index,drinking,salt intake and so on were close to hypertension occurring.ConclusionsThe results indicated that isolated systolic hypertension was highly prevalent in Liaoning province and it was associated with many risk factors.Comprehensive measures should be taken to prevent and control isolated systolic hypertension.