Good form design is generally acknowledged to be a key element of clin
ical trials and follow-up studies. Although some data are collected di
rectly from automated equipment, most measurements, examination findin
gs, and interview responses require at least one manual transcription,
either onto paper forms or directly into a computer. Regardless of th
e transcription method adopted, there is broad agreement that the qual
ity of study data depends strongly on the format and layout of the dat
a collection instruments. The task of form design and production is co
mplicated by two facts: first, a series of different forms is needed e
ven when the period of follow-up is short; and second, form design is
an ongoing process that starts before the first person is enrolled and
continues over the course of the trial. This paper (1) presents a con
cept (format independence) aimed at simplifying the design and revisio
n of data collection forms; (2) explains how a feature (styles) presen
t in most word processing software can be used to implement the concep
t; (3) discusses the advantages and disadvantages of a format-independ
ent approach as compared to more traditional form development tools; a
nd (4) describes the environment that prompted this approach to form d
evelopment.