Longitudinal Study of Health Literacy in the Municipality of Leiria

Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18+
SponsorInstituto Politécnico de Leiria

About this trial

Health literacy (HL) is a topic of increasing importance todays' ever-changing world. Over the past few decades, HL has gained importance, as it is a factor related to health behaviors and outcomes. In Portugal, the last survey was in 2016 and 61% of the population had a problematic or inadequate level of HL in general. Lisa is a cohort study that will measure HL in the adult population residing in the municipality of Leiria over the next 4 years, with measurements every 2 years. Over the years we will promote activities and interventions adjusted to the needs of Leiria's population. At the end we want to understand the changes during the years and improve the health care provided.

Eligibility criteria

This trial accepts healthy volunteers

Qualifiers

The study population will be composed by adults (≥ 18 years old) who are non-institutionalized and living in private households in Leiria.

Disqualifiers

Residing in hospitals, asylums, military barracks or prisons. Individuals who are unable to speak Portuguese or who reveal an inability to respond to the questionnaire, either directly or through a person who lives with them.

Trial population

The study population will be composed by adults (≥ 18 years old) who are non-institutionalized and living in private households in Leiria. Because there is no reliable list of households in Portugal, a random selection of points in the map of each location will be performed. Addresses will be selected, and afterwards the "random-walks" will start. Interviewers will register each selected address and, if someone is at home, they will collect information on age and gender of the different people living in that address and will give information about the study. In order to assure the successful data collection, up to three visits to each address (one during the weekend) will be made. At each address, the person whose birthday is closest to the day of the visit (aged 18 years or older) will be selected for the interview and, if available, will be immediately asked to answer the questionnaire.

Trial design

Design model

Cohort

Time perspective

Prospective

Treatments tested in this trial

Not listed

Trial groups

4,003 Participants
are grouped into 1 trial group
Group A: Residents of the municipality of Leiria aged 18 years or more.

Trial outcomes

Primary outcomes

1

Health literacy

HL will be measured by European Health Literacy Survey Questionnaire (HLS-EU-Q16). HLS-EU-Q16 was developed to measure HL in populations, based on a conceptual framework. Each item in the questionnaire assesses the perceived difficulty of a specific health-related task for the respondent. The HLS-EU-Q16 was translated and validated for Portuguese population. The scale contains 16 items that measure HL. Each item assesses the perceived difficulty of completing a specific health-related task by asking "On a scale from very difficult to very easy, how easy would you say it is to \[e.g, find information on symptoms of illnesses that concern you\]?" Each item is rated on a 4-point Likert-type scale (1, very difficult; 2, fairly difficult; 3, fairly easy; 4, very easy). A higher difficulty score is assumed with lower HL.

Time frame
Health literacy: measuring change over the next 10 years

Secondary outcomes

1

Anxiety and depression

To evaluate symptoms of anxiety and depression we applied the Hospital Anxiety and Depression Scale (HADS) Portuguese validated version. The HADS is a screening tool to apprehend clinically significant states of anxiety and depression in a non-psychiatric hospital setting. Individual anxiety and depression scores are calculated by summation of the appropriate seven items and thus can range from 0 to 21, with higher scores indicating higher levels of anxiety or depression, respectively. In both subscales, a score between 0 and 7 is "normal," between 8 and 10 "mild," between 11 and 14 "moderate," and between 15 and 21 "severe". Presence of anxiety and depression symptoms is defined when HADS scale is ≥11.

Time frame
Anxiety and depression: measuring change over the next 10 years
2

Metabolic risk

Metabolic risk is assessed by the Finnish Diabetes Risk Score-FINDRISC (FINDRISC). FINDRISC is a simple and practical tool originally designed in Finland to identify individuals at high risk of type 2 diabetes mellitus onset, without the need for laboratory tests. The score is based on eight easily identifiable parameters (age, body mass index, waist circumference, hypertension, physical activity level, diet, occurrence of previous hyperglycemia, and family history of diabetes) and provides a measure of the probability of developing diabetes over the next 10 years. Findrisc score varies between 0 and 24. A risk score of 0-14 points indicates a low to moderate risk of diabetes (1-17% chance of diabetes over 10 years). A risk score of 15-20 points indicates a high risk of diabetes (33% chance of diabetes over 10 years). A risk score of \>20 points indicates a very high risk of diabetes (50% chance of diabetes over 10 years).

Time frame
Metabolic risk: measuring change over the next 10 years

Other outcomes

Locations

This trial has no locations.

Sponsors and contacts

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