Dictionary of Evidence-based Medicine.pdf
Dictionary of Evidence-based Medicine.pdf
Dictionary of Evidence-based Medicine.pdf
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R<br />
Randomized clinical trial (see under Clinical trial)<br />
Randomized consent design (see under Post-randomization consent<br />
design)<br />
RCT (see under Clinical trial)<br />
Reactance theory<br />
Reactance theory was put forward to explain why people <strong>of</strong>ten do the<br />
opposite to what they have been asked to do. The theory suggests that<br />
people believe they have a set <strong>of</strong> free behaviours in which they can engage.<br />
Any threat to these generates a reaction aimed at preserving the threatened<br />
free behaviours. The individual demonstrates an intensity <strong>of</strong> reactance,<br />
which is in proportion to the magnitude <strong>of</strong> the perceived threat, the number<br />
<strong>of</strong> free behaviours being threatened and the value placed on the intensity<br />
<strong>of</strong> the reactance on them. Reactance theory has been used to explain<br />
non-compliance to prescribed treatment regimens (Fogarty JS (1997)<br />
Reactance theory and patient noncompliance. Social Science and <strong>Medicine</strong>.<br />
45: 1277-88. Brehm JW (1966) A theory <strong>of</strong> psychological reactance. Academic<br />
Press, New York).<br />
Read codes<br />
The Read codes are a clinical classification system being developed by the<br />
UK Department <strong>of</strong> Health for computerizing medical records and, in<br />
particular, general practice data. The intention is to produce comprehensive<br />
information about individual patients so that clinical decisions can<br />
be better informed. The data should also allow better audit <strong>of</strong> health needs<br />
and hence better targeting <strong>of</strong> health care resources (DoH (1990) New classification<br />
will streamline computerized medical records. DoH, London. Smith N,<br />
Wilson A, Weekes T (1995) Use <strong>of</strong> Read codes in development <strong>of</strong> a standard