A DCH question bank can help identify and repair a knowledge gap. It cannot establish how a candidate examines a child, responds in an observed consultation or performs a practical task. Compare BMJ OnExamination and iatroX for the written learning they provide, then make a separate plan for the performance that needs supervision.
This comparison is published by iatroX and includes its DCH bank. Product descriptions were checked on 19 September 2026. It does not claim that either bank alone prepares every assessment component.
Start with the product's stated purpose
BMJ OnExamination's DCH page describes a focused question resource. The iatroX catalogue also includes DCH knowledge practice. These are relevant options for revision, but their existence does not establish complete clinical preparation.
Use RCPCH's current DCH information to identify the assessment route and requirements that apply to you. Do not infer those requirements from a commercial package's headline.
Keep DCH distinct from MRCPCH products. A provider may offer both, and useful paediatric learning can overlap, but the intended candidate and assessment need to remain visible in the purchasing decision.
A communication difficulty may conceal a knowledge gap
One learner hesitates because the underlying concept is unclear. Another understands the concept but fails to answer the parent's actual concern. Both may receive a general comment that their explanation needs improvement, yet they need different learning activities.
Questions and rationales can help the first learner clarify what is known, what remains uncertain and which conclusion follows. The second may need a responsive conversation and feedback on how the explanation was adapted.
More written questions do not automatically repair the second problem. Conversely, repeating a consultation can leave the first learner rehearsing the same uncertainty without addressing its cause.
An original comparison of two candidates
Hannah, a fictional candidate, receives feedback that she sounds uncertain. On review, the uncertainty repeatedly concerns the interpretation of information in the case. A targeted knowledge session may help before she rehearses the explanation again.
Joel can explain the reasoning accurately to a colleague but overlooks the parent's question during an encounter. He continues with a prepared account even after the parent introduces a different concern. Another general question bank may add little to that immediate need.
These examples are not testimonials or prevalence claims. They illustrate why the resource should follow the learning problem rather than a broad label such as weak communication.
What to inspect in a sample
Attempt the question before reading its rationale. State the decision being asked and the reason for your chosen answer. Then inspect whether the explanation addresses that same decision and distinguishes the plausible alternative.
Where age or developmental information matters, the explanation should use it rather than append a generic paediatric summary. A useful rationale need not be long, but it should make the relevant connection clear.
If uncertainty remains, use a legitimate reference or the provider's supported clarification route. Do not copy a paid question into another product. Your own description of the conceptual gap can guide further learning without reproducing protected material.
Look beyond the score
A higher result on a familiar set may reflect better performance on that set. It does not establish that the candidate can conduct the corresponding clinical encounter or that a commercial percentage predicts the examination result.
The sample is most useful for judging explanations, navigation and the next learning step. It is insufficient to establish complete coverage. Record what was inspected and what remains unverified rather than turning a small experience into a global ranking.
A learning record has similar limits. It can document revision without becoming a workplace assessment or proof of clinical competence. The activity and the claim made about it should stay aligned.
Allocate the next purchase
A candidate lacking explanations should inspect the bank's teaching quality. A candidate lacking opportunities to demonstrate performance should arrange suitable observed practice. A candidate who already has both may not need another subscription at all.
BMJ OnExamination is a relevant dedicated DCH option to evaluate. iatroX is worth testing when question-specific guided clarification and organised review could address an unresolved knowledge problem. Neither should be stretched into an unsupported promise about all clinical components.
The most useful purchase may be a small supplement rather than a new complete programme. Identify the actual gap, retain the teaching that works and make explicit what still needs a patient, equipment or an experienced observer.
What iatroX adds to this decision
For DCH, iatroX's September 2026 product brief describes adaptive questions, spaced review and a Socratic Tutor that works from an attempted answer. The Tutor asks targeted follow-ups to explore the learner's misconception; it is a learning design, not proof that every generated response is correct.
The free-question sample offers up to twenty questions for the selected examination, subject to availability, without an account or card. Full DCH access and ongoing Tutor use are paid; the separate introductory Tutor session requires a free account.
The UK price published on 19 September 2026 is £99 paid upfront annually, equivalent to £8.25 a month billed annually, or £29 monthly. Paid question banks, Socratic Tutor, the study planner, simulations and CPD tools are included together, not sold as separate simulation or CPD add-ons.
Frequently asked questions
Can written DCH questions replace observed preparation?
No. They support knowledge and reasoning rather than every clinical or practical performance task.
Does this article claim a dedicated iatroX DCH simulation?
No. It concerns the DCH knowledge bank and the learning support attached to it.
How do I decide between more questions and more clinical practice?
Identify whether the problem is understanding the concept or demonstrating it in an encounter. The activities needed to address those gaps may differ.
Choose DCH questions and identify the next knowledge topic →