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NCT Number: NCT07313631

Impact Evaluation of Access to Free Low-Cost Health Insurance in Nigeria's Taraba State

The objective of this study is to examine the impact of a free health insurance offer on healthcare use, spending, self-reported health, and economic participation of women in Taraba state of Nigeria.

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This study is active but is not currently recruiting participants.

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Key information

Age range

18 year and older

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Bali LGA

Beli, Taraba State, Nigeria

About this study

This study aims to evaluate a health-insurance intervention implemented under the World Bank-funded Nigeria for Women Project (NFWP) in Taraba State. Women in Women Affinity Groups (WAGs) received an offer for a free, 12-month policy under the Taraba State Health Insurance Agency's Basic Minimum Package of Health Services (BMPHS), which covers essential primary and secondary care, including consultations, preventive services, maternal and child health, mental health, emergency care, and laboratory services, normally priced at ₦12,000 annually. We are using a randomized controlled trial design in Bali Local Government Area (LGA). Using administrative data on WAG enrollment, we randomly assigned 1,000 WAGs (stratified by ward and mean participant age) to either treatment (n=500) or control (n=500). Within each WAG, four women were randomly selected to enroll in the study, yielding 4,000 participants (2,000 insured; 2,000 controls). The study focuses on outcomes related to healthcare utilization, health status, out-of-pocket expenditures, and women's economic participation. The findings are expected to inform policy on expanding health insurance coverage as a strategy to improve women's health and promote their economic empowerment.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Members of one of 1,000 randomly selected women's groups operating in Bali local government area in Taraba State, Nigeria.

Exclusion criteria

  • At least 18 years old.

Treatment and study plan

No-Cost Health Insurance

Other

Provision of a free, 12-month insurance policy from the Taraba State Health Insurance Agency that covers the Basic Minimum Package of Health Services (BMPHS), including outpatient and inpatient consultations, preventive and reproductive health services, maternal and child health care, mental health care, emergency services, and laboratory testing.

Primary outcomes

  1. Respondent has health insurance

    Time frame: 6 months, 9 months, 11 months post treatment.

    Zero if not no health insurance, 1 if has health insurance.

  2. Has health insurance card

    Time frame: 6 months, 9 months, 11 months post treatment

    Zero if respondent has no health insurance card, 1 if they have a health insurance card.

  3. Respondent has successfully used health insurance for consultations, diagnoses, medications, or tests.

    Time frame: 6 months, 9 months, 11 months.

    Zero if respondent has not successfully used health insurance for consultations, diagnoses, medications, or tests. 1 if the respondent has successfully used health insurance for consultations, diagnoses, medications, or tests.

  4. Sought treatment for most recent illness

    Time frame: 6 months, 9 months, 11 months.

    Zero if respondent did not seek care for most recent illness. 1 if respondent did seek care for most recent illness

  5. Number of health facility visits in last 3 months.

    Time frame: 6 months, 9 months, 11 months.

    Reported number of health facility visits outside the home in the last 3 months.

  6. Most recent health facility visit was to a public sector facility

    Time frame: 6 months, 9 months, 11 months.

    Zero if last care event was in a private facility, 1 if last care seeking event was in a public facility

  7. Money for health care is a key barrier

    Time frame: 6 months, 9 months, 11 months.

    Zero if "getting money needed for advice or treatment" is not listed as a barrier. 1 if "getting money needed for advice or treatment" listed as a barrier.

  8. Most recent birth was in a health facility

    Time frame: 6 months, 9 months, 11 months.

    Zero if most recent birth was not in a government or private health facility. 1if most recent birth was in a government or private health facility. Limited to births in last 3 months.

  9. Child has received any vaccinations

    Time frame: 6 months, 9 months, 11 months.

    Zero if children aged under 12 months has not received any vaccinations. 1 if child has received at least one vaccination.

  10. Total cost of most recent healthcare

    Time frame: 6 months, 9 months, 11 months.

    Total cost of most recent healthcare visit, winsorized at the 1% and 99% levels.

  11. Most recent care episode reflects catastrophic health expenditure

    Time frame: 6 months, 9 months, 11 months.

    1 if most recent healthcare visit expenditure represents represents greater than 10% of household consumption

  12. Total indebtedness from healthcare or illness-related expenses

    Time frame: 6 months, 9 months, 11 months.

    Total amount of money owed for medical expenses, winsorized at the 1% and 99% levels.

  13. Respondent is depressed

    Time frame: 6 month, 9 month, 11 month.

    Score equal to or greater than 10 on Center for Epidemiologic Studies Depression Scale.

  14. Perceived health status

    Time frame: 6 months, 9 months, 11 months.

    Response to the following question: Think about your health over the last 3 months, including any long-term illnesses, hospital or clinic visits, or other ailments, how would you rate your health on a scale of 1-10 where 1 is very low health and 10 is very healthy with no ailments?

  15. Number of productive days lost to severe illness in the past 3 months

    Time frame: 6 months, 9 months, 11 months

    Reported number of productive days lost to severe illness in the past 3 months

Secondary outcomes

  1. Has ever tried to use health insurance

    Time frame: 6 months, 9 months, 11 months post treatment

    Zero if respondent has never tried to use health insurance, 1 if respondent has tried to use health insurance

  2. Number of antenatal care visits

    Time frame: 6 months, 9 months, 11 months.

    Number of antenatal care visits for any births in last 3 months

  3. Most recent health facility care event visit was to a secondary/tertiary care facility (hospital)

    Time frame: 6 months, 9 months, 11 months.

    1 if most recent health facility care event visit was to a secondary/tertiary care facility (hospital). 0 if visit was to a primary care facility or informal care facility.

  4. Received lab test as part of antenatal care in most recent pregnancy

    Time frame: 6 months, 9 months, 11 months.

    1 if received any lab tests as part of antenatal care in most recent pregnancy from births in last year. 0 otherwise.

  5. Child has received OPV

    Time frame: 6 months, 9 months, 11 months.

    1 if child born in last 12 months and age-eligible for OPV vaccine has received it. 0 if child born in last 12 months and age-eligible for OPV vaccine but has not received it.

  6. Child has received BCG vaccine

    Time frame: 6 months, 9 months, 11 months.

    1 if child born in last 12 months and age-eligible for BCG vaccine has received it. 0 if child born in last 12 months and age-eligible for BCG vaccine but has not received it.

  7. Child has received measles vaccine

    Time frame: 6 months, 9 months, 11 months.

    1 if child born in last 12 months and age-eligible for measles vaccine has received it. 0 if child born in last 12 months and age-eligible for measles vaccine but has not received it.

  8. Economically active in the last 7 days

    Time frame: 6 months, 9 months, 11 months.

    1 if respondent reports working, either paid or unpaid, in the last 7 days. This includes: work as an employee for a wage, salary, commission or any payment in kind; running a non-farm business; help in any kind of nonfarm business; work on your own farm or household agricultural activities; and unpaid apprentice work.

    0 if no work in the last 7 days.

  9. Hours engaged in economic activities in the last 30 days

    Time frame: 6 months, 9 months, 11 months.

    Total number of hours reported towards economic activities in the last 30 days. Calculated as days worked in a given activity times hours spent in a given activity, summed over activities.

  10. Total income over past 30 days.

    Time frame: 6 months, 9 months, 11 months.

    Reported income from all economic activities over the last 30 days, winsorized at the 1% and 99% levels.

  11. Total value of current savings

    Time frame: 6 months, 9 months, and 11 months post treatment.

    Total value of current savings, winsorized at the 1% and 99% levels.

  12. Total value of current borrowing

    Time frame: 6 months, 9 months, and 11 months post treatment.

    Value of all outstanding borrowing owed for food, medical expenses, loans, social occasions, school fees, businesses, and other. Winsorized at the 1% and 99% levels.

  13. Household decision making

    Time frame: 6 months, 9 months, and 11 months post treatment.

    1 if the respondent feels she has input into most or all household decisions, 0 if she has input into none, few, or some decisions.

  14. Respondent makes decisions about savings

    Time frame: 6 months, 9 months, 11 months post treatment.

    1 if respondent can make their own personal decisions regarding savings (at least to a small extent). 0 if respondent can not make their own personal decisions regarding savings

  15. Health insurance knowledge

    Time frame: 6 months, 9 months, 11 months.

    Number of questions correct about what health insurance does/does not cover:

    Health insurance covers the registration fee at a health facility. Health insurance covers the consultation fee you pay to see a doctor or nurse. Health insurance covers the cost of laboratory tests. Health insurance covers the cost of medicines or drugs. Health insurance covers the cost of treatment.

  16. Trust in state government

    Time frame: 6 months, 9 months, 11 months post treatment

    1 if respondent has trusts state government (a great deal of trust or trust somewhat), 0 if no trust at all or trust just a little.

  17. Trust in local government authority

    Time frame: 6 months, 9 months, and 11 months post treatment.

    1 if respondent has trusts local government authority (a great deal of trust or trust somewhat), 0 if no trust at all or trust just a little.

Sponsors and collaborators

Lead sponsor

World Bank

Other

Collaborators

  • Harvard School of Public Health (HSPH)

Registry information

Official study title

Women's Insurance for State Health - An Impact Evaluation of Health Insurance Provided Under the Basic Health Care Provision Fund in Taraba State, Nigeria

Important dates

Study start
2023
Primary completion
2027
Study completion
2027
First posted
Jan 2, 2026
Registry last updated
Jan 2, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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