Objective@#To explore the correlation between
hemoglobin and
blood pressure.@*
Methods@#This study adopted the cross-sectional design
method. Participants were recruited from grade 2 in
primary school, grade 1 from junior and senior
high school taking
physical examination, including the
hemoglobin test, organized by the Guangzhou Municipal Primary and
Secondary School Health and
Health Promotion Center from January to December in 2015. Correlation between
blood pressure and
hemoglobin and determinants of
blood pressure were analyzed.@*Results@#A total of 34 752 samples participated including 17 414
boys and 17 338
girls.
Hemoglobin was negatively associated with systolic
blood pressure (SBP) and diastolic
blood pressure (DBP) among
girls with
anemia(P<0.01).
Hemoglobin was positively associated with SBP and DBP among
boys and
girls with normal
hemoglobin level(P<0.01). With each tertile increase in
blood pressure,
hemoglobin level increased by 1 mmHg.
Logistic regression analysis showed that compared with peers from same grade with
hemoglobin level lower than P25, the
risk of suffering from
pre-hypertension and
hypertension among
students from grade 2 with
hemoglobin level greater than or equal to P75, and those from junior high and senior high
schools with
hemoglobin level higher than or equal to P50.@*Conclusion@#Among
students without
anemia population, a positive correlation between
hemoglobin and SBP and DBP is observed.