[A three years follow-up study on the blood pressures of 6111 children in Chengdu]

This paper reports the results of a follow-up study in blood pressures of 6111 children for 3 years in Chengdu city and the villages around. It was showed that the blood pressure for both the city and village children were elevated in overall with age. Among the city children, the rate of BP-rising varied in different periods of childhood and that of girls above 13 was not significant. Among village children, the rate of BP-rising for both male and female comparison to that of urban ones were significant (P less than 0.01). A comparison of BP-rising between these two groups revealed no significant differences. This result might be due to the rapid increase of body weight for the village children. It was demonstrated that heart rate, body weight and body height are the factors affecting blood pressure of which heart rate is something essential and is the test parameter for blood pressure research.