Michael Nordine

13 Questions 38 Answers 0 Followers

Questions related from Michael Nordine

Logistical Regression with a small sample size and outliers impacting the Odds Ratio. Solutions?

Hello. I need to perform a logistics regression for a small sample size (n=20) to determine predictive factors for an event. The only problem is that a few data points skew the whole sample,...

26 March 2023 4,581 5 View

ANOVA vs. T-Test discrepancy?

I have a time series analysis, in which I have determined a mean per each phase. When I run an ANOVA Test with repeated measures comparing the phases, I receive a non significant result, despite a...

01 February 2021 3,102 6 View

Which method of measurement should be used to express systemic vascular resistance (SVR)?

In reporting systemic vascular resistance measurements, one can use mmHg/min/L, dyn/sec/cm5, or pascals per second/cm2. Is there a general consensus from the field of applied physiology or medical...

18 September 2017 4,900 4 View

What are the acceptable standard deviations for the following hemodynamic parameters under orthostatic stress?

We are currently trying to implement filters for hemodynamic data collected from a centrifuge run with human subjects. Given this, we are looking for expert opinions on what are the acceptable...

24 February 2016 3,720 1 View

How do I define significant changes from resting heart rate?

At what point of ±% resting heart rate would one define as significant increase/decrease in heart rate. For example, if one had a resting heart rate of 60 bpm, would an increase to 75 BPM be...

10 November 2015 1,821 11 View

A formula to calculate Pa02 from Sp02%, anyone have any recommendations?

I have Sp02% and Fi02%, and I want to calculate a Pa02/Fi02 quotient. Is it possible to calculate a Pa02 from Sp02%? If yes, does anyone have any reliable formulas?

20 January 2015 8,938 21 View

Are there any tried and trusted methods for monitoring physiological parameters while submerged underwater?

A common problem encountered while performing water immersion research, is that water is not friendly to monitoring equipment such as EKG, heart rate, blood pressure, Sp02% etc. What methods of...

02 December 2014 8,546 6 View

Using NIRS underwater?

Has anyone any experience/advice for measuring central/distal hemoglobin via NIRS (NIRO-200, Hamamatsu Photonics) during water immersion? Will the electrodes function underwater? Will immersion...

17 October 2014 3,105 16 View

Does anyone have knowledge on the distribution of autonomic nerve fibers in the peripheral proximal/distal limbs?

Does anyone have any article recommendations that describe the distribution of autonomic nerve fibers, particularly sympathetic fibers, in the peripheral limbs? And as a further question, are...

31 July 2014 2,556 6 View

What is the correct way to proceed when a pearsons correlation test yields sig. results when outliers are removed?

If one performs a pearson correlation test with the removal of outliers, the probability of sig. correlations increases. However, how does one report this? Does one report that the test with...

09 June 2014 9,740 11 View

Would an organisms cardiovascular response under increased gravity be considered a reflex?

From a evolutionary standpoint, vertebrates, such as humans, developed under standard gravity. However, the cardiovascular systems of humans and primates can rapidly adapt to hypergravitational...

07 June 2014 3,247 5 View

Can one determine the extent of venous blood pooling via increases in skin temperature?

While recording skin temperatures from the medial anterior thigh/upper arm, increases in skin temperature were associated with orthostatic instability during LBNP exposure. How much pooled blood...

03 April 2014 1,356 19 View

Is it common or uncommon to find a normal leukocyte count during the exanthem phase of a measles infection?

Is there any specific biomraker or serum test other than unspecific CRP that is noticeable in the serum during a measles infection?

10 February 2014 7,747 3 View