  Risk assessment services fulfil the task of generating a risk report from
personal information and are developed for purposes like disease prognosis,
resource utilization prioritization, and informing clinical interventions. A
major component of a risk assessment service is a risk prediction model. For a
model to be easily integrated into risk assessment services, efforts are needed
to design a detailed development roadmap for the intended service at the time
of model development. However, methodology for such design is less described.
We thus reviewed existing literature and formulated a six-stage risk assessment
service development paradigm, from requirements analysis, service development,
model validation, pilot study, to iterative service deployment and assessment
and refinement. The study aims at providing a prototypic development roadmap
with checkpoints for the design of risk assessment services.
