The Effects of Price Reductions on Uptake of Preventive Dental Care

Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18-70
SponsorUniversity of Chile

About this trial

This study evaluates the effectiveness of price discounts in encouraging patients to schedule dental check-ups. Patients will be randomized to receive WhatsApp messages offering a preventive dental check-up at different price levels with or without a discount coupon for future dental treatments.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Patients who have an appointment scheduled within the next 1 to 7 days

The appointment must be scheduled in the medical area only

The appointment must be at a center that also offers dental services

Patients who have not received a preventive dental message in the last month

Disqualifiers

None

Trial design

Design model

Parallel

Treatments tested in this trial

  • Dental appointment message with intermediate price discount

    Behavioral

    Patients receive a WhatsApp message offering a preventive dental check-up for $9,990.

  • Dental appointment message with large price discount

    Behavioral

    Patients receive a WhatsApp message offering a preventive dental check-up for $4,990.

  • Dental appointment message with intermediate price discount and coupon

    Behavioral

    Patients receive a WhatsApp message offering a preventive dental check-up for $9990, plus a coupon for future treatments.

Treatment groups

172,800 Participants
are divided into 4 treatment groups
Group A: HoldoutNo intervention 0 interventions
Group B: $9,990Experimental treatment 1 intervention
Group C: $4,990Experimental treatment 1 intervention
Group D: $9990 plus couponExperimental treatment 1 intervention

Trial outcomes

Primary outcomes

1

Preventive Dental appointment scheduling

Proportion of patients that schedule a preventive dental check-up

Time frame
Within 7 days of receiving the WhatsApp message
2

Preventive Dental appointment attendance

Proportion of patients that attend a preventive dental check-up

Time frame
Within 30 days of receiving the WhatsApp message
3

Subsequent Dental appointment scheduling

Proportion of patients that schedule a dental treatment, following their preventive dental check-up (which equals 1 only if the patient completes a preventive dental check-up and then schedules a follow-up dental treatment)

Time frame
Within 60 days of receiving the Whatsapp message
4

Subsequent Dental appointment attendance

Proportion of patients that attend their dental treatment following their preventive dental check-up (which equals 1 only if the patient completes a preventive dental check-up and then completes a follow-up dental treatment)

Time frame
Within 90 days of receiving the Whatsapp message

Secondary outcomes

1

No-Show

Proportion of patients that fail to attend a scheduled preventive dental appointment

Time frame
Within 30 days of receiving the WhatsApp message
2

Interest in scheduling

Proportion of patients that click YES in response to the WhatsApp message

Time frame
Within 7 days of receiving the WhatsApp message
3

Any dental appointment scheduling

Proportion of patients that schedule any dental appointment (regardless of whether it is preventive or not)

Time frame
Within 7 days of receiving the WhatsApp message

Other outcomes

Sponsors and contacts

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