a prospective trial, each of 120 patients had rectal, axillary, and
forehead temperatures determined. Twenty patients were in each of six
arbitrarily determined categories, age < 1 month, 1-5 months, 6-11
months, 12-23 months, 2-14 years, and adults.
differences between rectal and other methods were calculated for each
patient (paired difference) and the mean differences were analyzed.
temperature was equivalent to axillary temperature plus 1°C for
ages greater than 1 month. Less than one month, least squares linear
regression analysis showed that rectal temperature was equal to axillary
temperature plus 0.2°C for each week of age up to 5 weeks.
and specificity were not calculated by the authors. They claimed that
this was not a valid method for assessing diagnostic tests.