For older Chinese people with high blood pressure, the risk of dying from any cause is lowest when their BMI is between 28 and 30, and increases if their BMI is too low or too high.

Scientific Claim

Among older Chinese adults aged 60 and older with hypertension, the relationship between BMI and all-cause mortality follows a reverse J-shaped curve, with the lowest risk observed at BMI 28–30 kg/m².

Original Statement

“BMI had a nonlinear association with all-cause mortality among all hypertensive participants and female and male subgroups based on the adjusted Cox model (Fig. 2). These associations all showed a reverse J-shaped curve.”

From study:Hypertension modifies the associations of body mass index and waist circumference with all-cause mortality among older Chinese: a retrospective cohort study

Evidence Quality Assessment

Claim Status

appropriately stated

Study Design Support

Design supports claim

Appropriate Language Strength

association

Can only show association/correlation

Assessment Explanation

The study is observational, so causal language is inappropriate. The claim correctly describes the observed pattern without implying causation.

Evidence from Studies

Supporting (1)

Hypertension modifies the associations of body mass index and waist circumference with all-cause mortality among older Chinese: a retrospective cohort study

Cohort Study

Human

2022 May 19

Contradicting (0)

No contradicting evidence found

Source Study

Hypertension modifies the associations of body mass index and waist circumference with all-cause mortality among older Chinese: a retrospective cohort study

Score: 59

DOI: 10.1186/s12877-022-03057-9

Similar Assertions

Older Chinese people with high blood pressure who have a BMI between 28 and 30 are less likely to die from any cause compared to those with a BMI between 22 and 24.

90%

Older Chinese people without high blood pressure who have a BMI between 26 and 28 are less likely to die from any cause compared to those with a BMI between 22 and 24.

89%

Older Chinese people without high blood pressure who are overweight (BMI between 24 and 28) are less likely to die from any cause compared to those with a normal weight.

87%

Older Chinese people with high blood pressure who are obese (BMI 28 or higher) are less likely to die from any cause compared to those with a normal weight.

87%

Older Chinese people without high blood pressure who are obese (BMI 28 or higher) do not have a significantly different risk of dying from any cause compared to those with a normal weight.

85%