Do reminders reduce no-shows?
This is one of the few questions in small-business software with a proper answer. The Cochrane Collaboration reviewed eight randomised controlled trials covering 6,615 patients and concluded that mobile phone text-message reminders increase attendance at healthcare appointments compared with no reminders and with postal reminders, have the same effect as phone-call reminders, and cost less per attended appointment than the calls 1. Low-to-moderate quality evidence, in the reviewers’ words, but consistent in direction.
The reason the question keeps being asked is that the baseline is worse than most owners think. A 2018 systematic review of 105 studies found an average no-show rate of about 23% across specialties, driven mainly by how long the patient waited between booking and the appointment, and by whether they had missed before 2.
What does a no-show cost?
Take a salon, a physio or a dental practice with forty booked slots a day. At the average rate in the literature, nine of those slots are missed. The chair, the therapist and the room are paid for whether or not the client arrives, so the missed slot is close to pure lost revenue, and the client who was turned away because the diary looked full is a second loss on top of it.
| Slots a day | Missed at 23% 2 | Missed at 10% | Recovered slots a month (22 days) |
|---|---|---|---|
| 20 | 4.6 | 2 | 57 |
| 40 | 9.2 | 4 | 114 |
| 80 | 18.4 | 8 | 229 |
The 10% column is a target, not a promise. The trials measured an improvement in attendance, not a fixed end rate; a practice that already reminds by phone will see less change than one that does not remind at all.
What makes a reminder work harder?
Two things the evidence supports. First, say what the missed slot costs. In two randomised trials in the UK, reminders that stated the cost of a missed appointment to the health service reduced missed appointments further than a plain reminder 3. For a private business the equivalent is a cancellation policy stated plainly in the message. Second, make cancelling easy. A patient who can reply “can’t make it” frees the slot for the waiting list; a patient who has to phone during hours simply does not come.
A small deposit taken at booking does the same job by a different route: it turns a soft intention into a commitment. That is why the booking system takes a deposit inside the chat on the plans that support it.
How should reminders be set up?
Automatically, from the booking itself. The reminder that fails is the one on a list that somebody was going to work through. The reminder that works is created the second the slot is booked, sent at a fixed interval before the appointment, and followed by a second nudge on the morning. It goes by email, and it carries the date, the time, the address and one-tap confirm or cancel.
Where does AI come in?
The reminder itself is not clever, and it should not be. What the AI does is everything around it: it takes the booking in a conversation instead of a form, it answers “can I move it to Thursday?” at 22:00, it reads the reply “running late” and tells the practice, and it fills the freed slot from the waiting list. The reminder is the cheapest part of the system and the part with the best evidence behind it.
Questions people ask
How far in advance should a reminder go out?
The trials in the Cochrane review sent reminders between one and seven days before the appointment. A day before, plus a same-morning nudge, is the common pattern and what our booking system sends by default.
Do reminders annoy customers?
The evidence says attendance goes up, which is the opposite of what annoyed customers do. Keep it to two messages and make cancelling a one-tap reply.
Which channel does the reminder use?
Email, with one-tap confirm or cancel. We do not sell a WhatsApp chatbot; the booking itself happens on your website and the reminder follows by email.
Sources
- Gurol-Urganci et al., “Mobile phone messaging reminders for attendance at healthcare appointments”, Cochrane Database of Systematic Reviews, 2013 (8 trials, 6,615 participants)
- Dantas, Fleck, Cyrino Oliveira & Hamacher, “No-shows in appointment scheduling – a systematic literature review”, Health Policy 122(4), 2018 (105 studies)
- Sims et al., “Stating Appointment Costs in SMS Reminders Reduces Missed Hospital Appointments: Findings from Two Randomised Controlled Trials”, PLOS ONE, 2015
Where we do this
If you are reading this from Cape Town, Vereeniging and Mossel Bay, those pages go through the local version of it: which languages the bot needs, what the busy hours look like, and which sectors ask what.