The performance of tests of publication bias and other sample size effects in systematic reviews of diagnostic test accuracy was assessed. Systematic reviews of diagnostic accuracy studies require study by study examination: first for heterogeneity, and then for sources of heterogeneity.
Cambridge: Cambridge University Press 2001.īegg CB. Systematic reviews in health care: a practical guide. QUADAS-2: a revised tool for the quality assessment of diagnostic accuracy studies. Whiting PF, Rutjes AW, Westwood ME, et al. Using the bland–altman method to measure agreement with repeated measures. Improving search efficiency for systematic reviews of diagnostic test accuracy: an exploratory study to assess the viability of limiting to medline, embase and reference checking. Should methodological filters for diagnostic test accuracy studies be used in systematic reviews of psychometric instruments? A case study involving screening for postnatal depression. Deep temperature monitoring using a zero-heat-flow method. Temperature monitoring and perioperative thermoregulation. An evaluation of a zero-heat-flux cutaneous thermometer in cardiac surgical patients. Evidence-based review of the use of the pulmonary artery catheter: impact data and complications. Effect of hypothermia on the coagulation cascade. Reversible inhibition of human platelet activation by hypothermia in vivo and in vitro. Michelson AD, MacGregor H, Barnard MR, et al. Perioperative normothermia to reduce the incidence of surgical-wound infection and shorten hospitalization. Perioperative maintenance of normothermia reduces the incidence of morbid cardiac events: a randomized clinical trial. Use of this device may not be appropriate in situations where a difference in temperature of less than 1 ☌ is important to detect.įrank SM, Fleisher LA, Breslow MJ, et al. Clinicians should therefore consider the potential that a temperature measurement from a 3M™ Bair Hugger™ Temperature Monitoring System could be as much as 1 ☌ higher or lower than core temperature. The range of uncertainty in the accuracy of a thermometer should be taken into account when using this device to inform clinical decision-making. Population limits of agreement for the sensitivity analysis restricted to studies rated as having low risk of bias across all the domains of the QUADAS-2 were similar to the primary analysis. The GRADE evidence quality rating was downgraded to moderate due to concerns about study limitations. Population limits of agreement, which take into consideration the between-study heterogeneity and sampling error, were wide, spanning from − 0.93 to 0.98 ☌. The pooled estimate for the mean bias was 0.03 ☌. Data from 952 participants with 314,137 paired measurements were included. The primary meta-analysis of zero-heat-flux versus core temperature consisted of 22 comparisons from 16 individual studies. Pooled estimates of the mean bias and limits of agreement with outer 95% confidence intervals (population limits of agreement) were calculated. The Grading of Recommendations, Assessment, Development and Evaluations (GRADE) approach was used to summarize the strength of the evidence. Study selection and quality assessment was performed independently using the Revised Quality Assessment of Diagnostic Accuracy Studies tool (QUADAS-2).
Medline and EMBASE were searched for studies that reported on a measurement of core or peripheral temperature that coincided with a measurement from the zero-heat-flux device. The aim of this review was to determine the accuracy and precision of zero-heat-flux temperature measurements from the 3M™ Bair Hugger™ Temperature Monitoring System. These devices are increasingly being used to substitute for more invasive core temperature measurements during surgery and in critical care. Zero-heat-flux thermometers provide clinicians with the ability to continuously and non-invasively monitor body temperature.
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