HK-EOSS Calculator

For Hong Kong Chinese adults
Symptom assessment developed by Dr Johnny Yau Cheung Chang

Acknowledgement

This is an obesity risk assessment tool developed for Hong Kong Chinese adults.
This staging system is an adapted, non‑validated version intended for general guidance only. It should not replace clinical judgement. Users should seek professional medical advice for diagnosis and treatment decisions.

I acknowledge and agree with the disclaimer above.

Start Assessment

Part 1: Measurements

1. Gender (biological) *

Male

Female

Your Measurements

2. Weight *

3. Height *

Waist and Hip size

Hip measurement is optional but recommended for more accurate assessment.

4. Waist Circumference *

5. Hip Circumference (optional)

✓ Assessment Complete

Your commitment to a healthy lifestyle is clearly benefiting your overall health, especially risk of obesity-related complications, as reflected in your health indicators. We encourage you to maintain these positive habits and have regular body check!

References

Part 2: Symptom Assessment

Assessment 1 of 10

Mobility

Over the past month, you have not had any mobility limitations due to your excess weight (whether related to pain or not).

Over the past month, you have been unable to move around due to your excess weight (whether related to pain or not) less than half of the time.

Over the past month, you have been unable to move around due to your excess weight (whether related to pain or not) around half of the time.

Over the past month, you have been unable to move around due to your excess weight (whether related to pain or not) more than half of the time.

Over the past month, you have been unable to move around due to your excess weight (whether related to pain or not) all the time.

Assessment 2 of 10

Oesophagal reflux (heartburn)

Over the past month, you have not had any heartburn.

Over the past month, you have had heartburn less than half of the time or require occasional, as-needed medication for relief less than half of the time.

Over the past month, you have had heartburn around half of the time or require occasional, as-needed medication for relief around half of the time.

Over the past month, you have had heartburn more than half of the time or require occasional, as-needed medication for relief more than half of the time.

Over the past month, you have had heartburn all the time or require regular medication for relief.

Assessment 3 of 10

Intertrigo (skin irritation in skin folds)

Over the past month, you have not had any irritation in skinfolds from rubbing.

Over the past month, you have had irritation in skinfolds from rubbing less than half of the time.

Over the past month, you have had irritation in skinfolds from rubbing around half of the time.

Over the past month, you have had irritation in skinfolds from rubbing more than half of the time.

Over the past month, you have had irritation in skinfolds from rubbing all the time.

Assessment 4 of 10

Self-image

Over the past month, you have not felt unhappy with how you look due to your body weight.

Over the past month, you have felt unhappy with how you look less than half of the time due to your body weight.

Over the past month, you have felt unhappy with how you look around half of the time due to your body weight.

Over the past month, you have felt unhappy with how you look more than half of the time due to your body weight.

Over the past month, you have felt unhappy with how you look all the time due to your body weight.

Assessment 5 of 10

Mood

Over the past month, you have not felt anxious or sad.

Over the past month, you have felt anxious or sad less than half of the time.

Over the past month, you have felt anxious or sad around half of the time.

Over the past month, you have felt anxious or sad more than half of the time.

Over the past month, you have felt anxious or sad all the time.

Assessment 6 of 10

Employment

Over the past 12 months, your excess weight has not prevented you from getting or doing the job you want.

Over the past 12 months, your excess weight has prevented you from getting or doing the job you want less than half of the time.

Over the past 12 months, your excess weight has prevented you from getting or doing the job you want around half of the time.

Over the past 12 months, your excess weight has prevented you from getting or doing the job you want more than half of the time.

Over the past 12 months, your excess weight has prevented you from getting or doing the job you want all the time.

Assessment 7 of 10

Type 2 diabetes, hypertension and dyslipidaemia (choose the highest stage that matches your condition)

You do not have type 2 diabetes, prediabetes, hypertension, or dyslipidaemia, or you are unsure whether you have any of these conditions or not.

You have pre-diabetes.

You have type 2 diabetes, hypertension, or dyslipidaemia.

You have type 2 diabetes or hypertension, and at least one of these conditions is complicated (for example, by kidney impairment or eye complications).

Assessment 8 of 10

Cardiovascular diseases

You have no cardiovascular diseases (e.g. stroke, heart attack, heart failure) or you are unsure whether you have cardiovascular diseases or not.

You have a history of cardiovascular diseases (e.g. stroke, heart attack, heart failure)

Assessment 9 of 10

Fatty liver (Metabolically-dysfunction-associated steatotic liver disease)

You do not have fatty liver, or you are unsure whether you have fatty liver or not.

You have fatty liver

You have fatty liver with cirrhosis/liver failure.

Assessment 10 of 10

Polycystic ovary syndrome (PCOS), infertility

You do not have polycystic ovary syndrome (if female) or infertility (for any sex), or you are unsure whether you have any of these conditions or not.

You have polycystic ovary syndrome (if female) or infertility (for any sex).

Your Assessment Results

Advice

This staging system is an adapted, non‑validated version intended for general guidance only. It should not replace clinical judgement. Users should seek professional medical advice for diagnosis and treatment decisions.

For the reference list and advice to all other stages, please check here.

Your Key Figures

BMI	--
Waist Circumference	--
Waist-to-Hip Ratio	--
Waist-to-Height Ratio	--

Cut-offs for Obesity

Asian

BMI ≥25.0 kg/m²
Waist circumference: male ≥90 cm, female ≥80 cm
Waist-to-hip ratio: male >0.9, female >0.85
Waist-to-height ratio: >0.5

Excess body fat can pragmatically be assumed if BMI is >40 kg/m²

Caucasian

BMI ≥30.0 kg/m²
Waist circumference: male ≥102 cm, female ≥88 cm
Waist-to-hip ratio: male >0.9, female >0.85
Waist-to-height ratio: >0.5