National Population Health Survey FAQs

The primary objective of the National Population Health Survey (NPHS) is to assess the health status of Singapore residents in relation to chronic diseases such as diabetes and high blood pressure, and risk factors like smoking and obesity. The survey will help the Ministry of Health (MOH) and the Health Promotion Board (HPB) to evaluate existing programmes and develop new programmes to improve the health of Singapore residents.

There are two components to the survey. In the first component, selected households will be asked to take part in the NPHS (Household Interview). In the second component, some of the persons who have completed the NPHS (Household Interview) will be invited to take part in the NPHS (Health Examination).

• NPHS (Household Interview)
  
  Company: National University of Singapore (IPS-Social Lab)
  
  Interviewers from this company will wear an identification tag bearing their name, photograph and the company’s official stamp when conducting the survey. They will also carry a letter of authorisation from MOH and HPB.
  
  Visit go.gov.sg/nphsverify to check if the interviewer is authorised to conduct the survey.

• NPHS (Health Examination)
  
  Company: Healthway Medical Group
  
  Respondents will be given an invitation letter for the health examination. They can attend the health examination with their letter of invitation at the designated clinics.

Households selected for the survey will receive an invitation letter from MOH and HPB before the interviewer’s visit. Authorised survey interviewers will visit the selected households to interview household members.

The invitation letter is in four languages – English, Chinese, Malay and Tamil.

You can call the HPB hotline at 1800 223 1313* or e-mail hpb_nphs@hpb.gov.sg, and we will send another copy of the invitation letter to you.

At least 16,000 households have been randomly selected from the National Database on Dwellings (maintained by the Department of Statistics) to take part in the survey.

An interviewer from National University of Singapore (IPS-Social Lab), commissioned by MOH and HPB, will visit your house to conduct the survey from July 2023 to June 2024. Please extend your co-operation to the interviewer during his/her visit(s) so that the interview for selected household members can be completed as quickly as possible. If the interview for any of the selected household members cannot be completed, the interviewer will ask for another appointment date to visit your house to complete the interview.

Interviewers visiting your house for the survey will wear an identification tag bearing their name, photograph and the company’s official stamp. They will also carry a letter of authorisation from MOH and HPB. You can contact the HPB hotline at 1800 223 1313* (Mon-Fri, 8am to 6pm) or our appointed interview company, National University of Singapore (IPS-Social Lab) at 8877 9905 (daily, 9am to 6pm) if you wish to confirm the identity of the interviewer. Alternatively, visit go.gov.sg/nphsverify to check the contact number that is provided by the interviewer.

The interview will be conducted with the person named in the invitation letter (i.e., reference person).

Where a reference person has not been pre-selected, the interviewer will ask you to list all of the household members living at your address and he/she will randomly select one adult household member aged 18 to 79 years to take part in the survey.

All children aged 0 to 12 years, all youths aged 13 to 17 years, and persons aged 65 years and above (if any) related to the reference person and living at the same address will also be interviewed.

Before starting the interview, the interviewer will obtain written consent from household members.

For selected children (aged 0 to 12 years), the interviewer will conduct a face-to-face interview with a parent or guardian of the children.

For selected youths (aged 13 to 17 years), after parental consent is sought, they will be invited to self-complete an online survey at a time that is convenient to them. 

For selected reference persons (aged 18 to 20 years), the interviewer will conduct a face-to-face interview with them, after seeking parental consent.

For households with only seniors aged 80 years and older (i.e., no one aged 18 to 79 years live at the address), the interviewer will interview all the seniors living at the address.

If interviews with selected household members cannot be completed on the same day, the interviewer will arrange to visit your house again on another day to complete the interviews. We thank you in advance for your understanding and co-operation.

All interviews can be conducted in English, Mandarin, Malay, or Tamil.

Household members refer to everyone staying at the address for six months or more, who are Singapore Citizens/ Permanent Residents.

Foreign domestic workers, tenants who are foreigners or staying on a short-term basis (less than six months), and friends/ relatives who are staying with the home-owner on a short-term basis (less than six months) should not be included. 

All information collected for the survey will be kept strictly confidential, and used only for the planning and evaluation of national programmes to improve the health of Singapore residents. To safeguard the information collected for the survey, the research company and interviewers commissioned by MOH and HPB are required to sign undertakings, and seek respondents’ consent for participation. All information collected will also be stored in a secure database separated from the Internet, which is accessible to only authorised personnel. Any information published with regard to the survey will only be in aggregate form, from which no individual information can be identified.

The survey will collect demographic information, and will cover a variety of health-related topics on chronic diseases, exercise, health screening, mental well-being, dietary practices and smoking. As some of the questions may be personal in nature, we would like to assure you that all information provided will be kept strictly confidential.

Your views are very important to us and we assure you that any information shared will be kept strictly confidential. You can choose not to answer any question if you do not feel comfortable answering it. You may also choose to stop the interview at any time.

If the interviewer visits your house before you move to your new address, you are requested to take part in the survey. Should you move to your new address before the interviewer can complete the interview(s) required for your household, please provide your new address and contact number(s) to the interviewer so that he/she could follow up to complete all the required interviews at your new address. We thank you in advance for your co-operation.

If the interviewer has not made any visits to your house by the time you move to your new address, you are not required to take part in the survey.

If no one is at home when the interviewer visits, the interviewer will leave a note with contact details indicating that he/she has visited your house. Please contact the interviewer to arrange for a convenient interview date and time. Interviews can be arranged on any day, including weekends and Public Holidays, between 10am and 9:30pm.

If you and your household members are not available or need to go out when the interviewer visits your house, please arrange with the interviewer to visit your house at another time or on another day.

Tenants, who are Singapore Citizens or Permanent Residents staying on a long-term basis (more than six months), are eligible to participate in the survey. Non-residents, as well as homeowners who rent out the whole residential property and do not live there, do not need to take part in the survey.

Yes, we can arrange for you to complete the interview at your preferred location. However, if other members in your household are also selected to take part in the survey, it will be more convenient to do the interview at your home. The interviewer can conduct the interviews on any day, including weekends and Public Holidays, between 10am and 9.30pm, at your convenience. Please contact the appointed interview company, National University of Singapore (IPS-Social Lab) at 8877 9905 to schedule an appointment.

Please contact the HPB hotline at 1800 223 1313* or e-mail hpb_nphs@hpb.gov.sg, and provide your address so that we can inform our appointed interview company on how to assist you on the survey.

Your participation in the survey will help to improve the health of Singapore residents by allowing MOH and HPB to better plan and evaluate national health programmes. Past survey results have been used to plan and improve health screening programmes, and to develop health promotion programmes on health eating, physical activity and others. You will also be given a token of appreciation for your participation.

All reference persons who have completed the NPHS (Household Interview) will be invited to undergo the NPHS (Health Examination) at designated clinics. The objective of the health examination is to collect physical measurements such as your height, weight, hip and waist circumference, and blood pressure, and samples of blood and urine. The blood and urine samples will be sent to a medical laboratory to test for blood sugar, cholesterol, cotinine (applicable for youth) and proteins in urine and other conditions.

A full report on your health status will be mailed to you around six weeks after you have completed your health examination. If you wish to find out more about your medical report, please consult your family doctor as the desirable values provided in the report serve only as a guide, and interpreting the results of these tests have to be individualised according to your health state.

Please note the following points when you undergo the health examination. For the results of the blood tests to be accurate and reliable:

1. Do not eat or drink anything except plain water after 10pm on the night before your appointment. You must not have any breakfast on the morning of your appointment. Drinks such as tea and coffee, and sweets are not allowed but you can continue to drink plain water.

2. If you are taking medicine for any chronic condition besides diabetes (e.g. high blood pressure, asthma or heart diseases), please continue to take your medicine as directed by your doctor.

3. If you are a diabetic on medication or insulin injections:

   • Do not take your morning diabetes medication/ injection;

   • Bring the diabetes medication with you to the clinic. Once the blood test is over, take the diabetes medication and have breakfast. Some light snacks will be provided. However, if you have a special dietary requirement, please carry some food with you; and

   • Please inform the person at the survey registration that you are a diabetic patient.

4. Please wear light and loose clothing with short sleeves, so that the tests can be carried out easily.

While participation in the health examination is voluntary, your cooperation is important to ensure that all the information collected and analysed reflects the health of Singapore residents as reliably and accurately as possible.

We can re-send a copy of the invitation letter (or instructions for health examination or letter to employer) for the health examination to you. You can call the HPB hotline at 1800 2231313* or e-mail hpb_nphs@hpb.gov.sg, and we will send a copy to you.

If you are pregnant, you do not need to participate in the health examination. Please call Healthway Medical Group Hotline at 6817 8306 / 6817 8307 or email to enquirynphs@healthwaymedical.com to notify them. Alternatively, you may notify us via the HPB hotline at 1800 223 1313* or email to hpb_nphs@hpb.gov.sg.

Yes, you need to fast for the health examination. You may refer to Question 20 on what you will need to do before the health examination.

We thank you in advance for your co-operation. If you have any other questions about the National Population Health Survey, please contact us:

• HPB hotline at 1800 223 1313*, Monday to Friday (excluding Public Holidays), from 8am to 6pm.

• E-mail: hpb_nphs@hpb.gov.sg

*Kindly note that airtime charges apply for mobile calls to 1800 services lines and calls are free of charge only if made from regular land lines