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Original ArticleOpen Access
The Optimal Cut-Off Points of Body Mass Index which Reflect the Risk Factors of Cardiovascular Disease in the Urban Thai Male Population
Temcharoen P 
,
Kaewboonruang P ,
Pradipasen M ,
Srisorachart S
,
Kaewboonruang P ,
Pradipasen M ,
Srisorachart S Objective: To examine the optimal cut-off points of body mass index (BMI) which reflect the risk-level of
cardiovascular disease (CVD) risk factors in urban Thai males.
Material and Method: A cross-sectional research was conducted on Thai males, aged 35-50 who worked and
lived in Bangkok. Four hundred and thirteen government officers were selected for blood pressure, weight
and height measurements. BMI were calculated and blood samples were collected for blood chemical analysis.
Sensitivity, specificity and ROC curve analyses were used for data analysis.
Results: The prevalence of overweight subjects was 57.8 percent by the BMI > 23 kg/m2, i.e. the Asian cut-off
point criteria, while it was only 32.7 percent by the BMI > 25 kg/m2, i.e. the WHO criteria. The cut-off points of
BMI which corresponded with the at-risk level of SBP, DBP, TC, TG, LDL-C, and HDL-C were 23.5, 23.5, 22.5,
23.5, 23.0 and 24.0 kg/m2, respectively. BMI at 23.5 kg/m2 was suggested as the optimal cut-off point of BMI
which reflects the risk-level of CVD risk factors.
Conclusion: The findings indicated that the Asian criteria might be more appropriate for urban Thai males
who have a sedentary lifestyle than that the WHO criteria. However, the further study with larger sample size
is needed to confirm the cut-off point of BMI at 23.5 kg/m2.
Keywords: Body mass index, Cut-off point of body mass index, Cardiovascular disease, Hypertension,
Dyslipidemia
cardiovascular disease (CVD) risk factors in urban Thai males.
Material and Method: A cross-sectional research was conducted on Thai males, aged 35-50 who worked and
lived in Bangkok. Four hundred and thirteen government officers were selected for blood pressure, weight
and height measurements. BMI were calculated and blood samples were collected for blood chemical analysis.
Sensitivity, specificity and ROC curve analyses were used for data analysis.
Results: The prevalence of overweight subjects was 57.8 percent by the BMI > 23 kg/m2, i.e. the Asian cut-off
point criteria, while it was only 32.7 percent by the BMI > 25 kg/m2, i.e. the WHO criteria. The cut-off points of
BMI which corresponded with the at-risk level of SBP, DBP, TC, TG, LDL-C, and HDL-C were 23.5, 23.5, 22.5,
23.5, 23.0 and 24.0 kg/m2, respectively. BMI at 23.5 kg/m2 was suggested as the optimal cut-off point of BMI
which reflects the risk-level of CVD risk factors.
Conclusion: The findings indicated that the Asian criteria might be more appropriate for urban Thai males
who have a sedentary lifestyle than that the WHO criteria. However, the further study with larger sample size
is needed to confirm the cut-off point of BMI at 23.5 kg/m2.
Keywords: Body mass index, Cut-off point of body mass index, Cardiovascular disease, Hypertension,
Dyslipidemia
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