However in order to use a specific instrument, you must be certified on that specific piece of equipment.
We decided not to use a specific instrument, described previously [ 7], to measure quality of life for patients with endometriosis because this would have introduced significant bias since our sample was also composed of patients without endometriosis [ 8].
Particle center of mass was measured through a centroid approach by using a specific Labview virtual instrument while the x and y projections of the particle trajectories were built through a nearest neighbor approach to link measurements in successive frames.
Core cylinders with a diameter of 1,2 mm each were punched from each of these areas and deposited into a recipient paraffin block using a specific arraying device (Beecher Instruments, Silver Spring, MD).
The tension elicited by sciatic nerve stimulation (Digitimer DS9A stimulator) was displayed on the monitor using a specific Micro 1501 CED (Cambridge Instruments, UK), after amplification by a DC transducer amplifier (Neurolog NL 107).
RNA was reverse-transcribed using the High-Capacity cDNA Archive Kit (Applied Biosystems) and the expression levels of XIST were analyzed on an ABI PRISM 7700 instrument (Applied Biosystems) using a specific TaqMan® Gene Expression Assay (ID# Hs01079824_m1) and the TaqMan® Pre-Developed Assay for the 18S ribosomal RNA housekeeping gene (part no. 4319413E) for normalization.
Therefore, it is better, when expecting toothache, to use a specific observational instrument that focusses on toothache related behaviors such as the Dental Discomfort Questionnaire.
Many of these differences were captured with additional quantitative evaluation using a disciplinary specific instrument, though concerns remain regarding the ability to capture student knowledge through purely quantitative means.
When using a very specific instrument, extra attention is needed for the early identification of increased vulnerability in patients during hospital stay.
