Effectiveness of Teleconsultation Package on Physiological Risk Factors of Preventable Non-Communicable Diseases among Indonesian Adults

To determine the effectiveness of a teleconsultation package on physiological risk factors of preventable non-communicable diseases among Indonesian adults.

A two-arm, double-blinded, parallel-group randomized controlled trial (RCT) conducted at a single center with multistage random sampling will be applied

The trial in Kalijaya Village, Indonesia, involves door-to-door recruitment. Participants undergo pretest assessments. The intervention group receives educational materials and teleconsultations for nine weeks, while the control group receives only educational materials. Double-blinded design ensures unbiased results. Study duration: 24 weeks, with assessments at baseline, post-intervention, and follow-up.

Inclusion Criteria: Indonesian adults (40-60 years) with teleconsultation technology and language comprehension. Exclusion Criteria: pregnant women, severe chronic conditions, mental health disorders, recent major surgery, current cancer treatment, lack of technology, language barriers, non-compliance, and other trial enrollment.

Intervention Group: Participants will receive teleconsultations and educational materials (videos and posters) on physical activity and nutrition for nine weeks, including three weekly teleconsultation sessions via WhatsApp. Control Group: Participants will receive initial consultations and educational materials but no further teleconsultation sessions.

Main Outcome Measures: Blood pressure (BP), fasting blood sugar (FBS), blood total cholesterol (Chol), blood uric acid (UA), body weight (BW), waist-to-hip ratio (WHR), peripheral blood oxygen (SpO2), dietary intake, and frequency of physical activity. Assessed at baseline (pre-intervention), immediately post-intervention (week 12), and follow-up (week 24).

In this randomized controlled trial (RCT), a multistage random sampling approach will be employed to ensure a robust and unbiased participant selection process. Initially, registration forms will be distributed to the population of Kalijaya village to gather demographic data and medical histories. Individuals who register and participate in the pretest will be selected through purposive sampling based on predefined inclusion and exclusion criteria. Eligible participants will then undergo simple randomization at the individual level, ensuring each participant has an equal chance of being allocated to either the intervention or control group. Stratified randomization may be applied, with strata based on key variables such as age and gender, to achieve balanced representation across groups. The randomization sequence will be generated using Google random number generator, ensuring precision and eliminating bias. The allocation process will be conducted entirely online, with participants being notified of their group assignments via WhatsApp once their eligibility is confirmed. This online mechanism ensures transparency and methodological rigor, while maintaining the validity of the trial outcomes.

This study employs a double-blinded design to ensure the integrity and validity of the results. In a double-blinded study, neither the participants nor the researchers administering the interventions are aware of the group assignments. This approach minimizes bias and enhances the reliability of the findings. Participants were randomly assigned to either the treatment group or the control group. Randomization was achieved using a computer-generated randomization sequence to ensure equal probability of assignment to each group. To maintain the double-blind nature of the study, the following measures were implemented: 1. Blinding of Participants: Participants were informed that they would receive either the intervention or control but were not told which one. 2. Blinding of Researchers: Researchers responsible for administering the intervention and assessing outcomes were also blinded to the group assignments. This was achieved by using coded labels for the treatments, which were only deciphered after the data collection was complete.

There is no further information