Chronic kidney disease is defined by the Kidney Disease Outcomes ...

[Caiter2013]

Chronic kidney disease is defined by the Kidney Disease Outcomes Quality Initiative of the National Kidney Foundation as a:
 
  A) glomerular filtration rate of less than 60 mL/min for 3 months or more.
  B) glomerular filtration rate of less than 100 mL/min for 3 months or more.
  C) glomerular filtration rate of less than 40 mL/min for 6 months or more.
  D) glomerular filtration rate of less than 120 mL/min for 3 months or more.

Question 2

A laboratory staff member is interested in evaluating a new technology (Optode) for measuring potassium in serum. The technologist performs a split sample study by measuring potassium using their current method, ISE, and the new method.
 
  Determine the slope and intercept using a linear regression by least-squares analysis. Also calculate the Pearson product-moment correlation coefficient.
  Which of the following responses reflects the correct values for each calculated parameter?
 
  Sample  Potassium (ISE) reference method (meq/L) - x-axis Potassium (Optode) new method (meq/L) - y-axis
  1 4.5 4.7
  2 2.4 2.7
  3 7.4 7.6
  4 10.1 10.2
  5 6.1 6.2
  6 12.4 12.3
  7 6.1 6.2
  8 10.0 10.2
  9 7.2 7.1
  10 8.1 8.2
  11 3.6 3.8
  12 8.4 8.4
  13 4.4 4.7
  14 8.6 8.7
  15 8.1 8.4
  16 11.3 11.4
  17 8.3 8.2
  18 9.0 9.2
  19 5.8 6.0
  20 3.5 3.7
  21 3.0 3.1
  22 4.0 4.0
  23 4.5 4.6
  24 2.5 3.0
  25 7.0 7.0
 
  A) Slope: 1.02, intercept: -0.283, correlation coefficient: 0.998
  B) Slope: 0.976, intercept: 0.290, correlation coefficient: 0.998
  C) Slope: 0.976, intercept: -0.283, correlation coefficient: 0.998
  D) Slope: 1.02, intercept: 0.290, correlation coefficient: 0.998

[k.lashomb]

Answer to Question 1

A

Answer to Question 2

B

[Caiter2013]

TYSM

[nothere]

Excellent