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is medicine doses based on patient's weight a linear relation. If it is what is the dependent and independent variable?

 Jan 23, 2017
 #1
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Yes it is....generally the dosage is listed as   x mg/kg       x  mg per kg of body weight

so the independent variable is the  dosage  x mg/kg   as it never changes....what does change is the WEIGHT of th patient from patient to patient .....so patient weight would be the DEPENDENT variable....how much they get as a dose DEPENDS on how much they WEIGH ....

 Jan 23, 2017
 #2
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That is not correct EP   sad

 

How much medicine the patient is given depends on how much they weigh 

SO

the wieght is the INDEPENDENT  variable and 

the dose is the DEPENDENT  variable.  (it depends on the weight)

 Jan 23, 2017
 #3
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Hmmmm.....     the dosage is constant    say  5 mg/kg       the DOSE is variable dependent on weight (which is variable)

so I guess it depends on a slight wording difference whether we are talking   dose   or dosage  (which unfortunately are sometimes used interchangeably) 

 

For a GIVEN PATIENT  DOSE would be variable between  different medicines based on dosages

For a GIVEN MEDICINE dosage would be constant and patient weight would be variable ....

 

a conundrum...don't you think?   

ElectricPavlov  Jan 23, 2017
 #4
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Nah! I am going to change my mind (again) and say "Yes, Melody, you are correct'

I think I even said it in my first answer

DOSE would be the y coordinate      m would be the DOSAGE  'x' would be patient weight and b would be any applicable loading dose

 

dose = dosage x wt   + load       would make dose the dependent   and  weight the independent variable   

Yah?    

 

Thanx !     G'Day !

ElectricPavlov  Jan 23, 2017

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