How to turn pft read-outs into percentages

CaliSally

New member
It's not that I'm obsessing over numbers perse. My purpose is to create my own personal graph, to follow my trends. Although I get the pft log from my doctor, the trends are better seen and understood when in visual form, like a graph. They give me a graph sometimes, but I want my own.

That aside, I did locate this site which has a Spirometry Reference Value Calculator:
<a target=_blank class=ftalternatingbarlinklarge href="http://www.cdc.gov/niosh/topics/spirometry/RefCalculator.html
">http://www.cdc.gov/niosh/topic...ry/RefCalculator.html
</a>
I enter in the knowns, and it gives me the numbers I was looking for to create my graph! So Cool!

Additionally, someone from this site, and my doctor emailed me this link:
<a target=_blank class=ftalternatingbarlinklarge href="http://www.hopkinsmedicine.org/pftlab/predicted.html
">http://www.hopkinsmedicine.org.../predicted.html
</a>

In case anyone else wanted to make their own chart.
 

CaliSally

New member
It's not that I'm obsessing over numbers perse. My purpose is to create my own personal graph, to follow my trends. Although I get the pft log from my doctor, the trends are better seen and understood when in visual form, like a graph. They give me a graph sometimes, but I want my own.

That aside, I did locate this site which has a Spirometry Reference Value Calculator:
<a target=_blank class=ftalternatingbarlinklarge href="http://www.cdc.gov/niosh/topics/spirometry/RefCalculator.html
">http://www.cdc.gov/niosh/topic...ry/RefCalculator.html
</a>
I enter in the knowns, and it gives me the numbers I was looking for to create my graph! So Cool!

Additionally, someone from this site, and my doctor emailed me this link:
<a target=_blank class=ftalternatingbarlinklarge href="http://www.hopkinsmedicine.org/pftlab/predicted.html
">http://www.hopkinsmedicine.org.../predicted.html
</a>

In case anyone else wanted to make their own chart.
 

CaliSally

New member
It's not that I'm obsessing over numbers perse. My purpose is to create my own personal graph, to follow my trends. Although I get the pft log from my doctor, the trends are better seen and understood when in visual form, like a graph. They give me a graph sometimes, but I want my own.

That aside, I did locate this site which has a Spirometry Reference Value Calculator:
<a target=_blank class=ftalternatingbarlinklarge href="http://www.cdc.gov/niosh/topics/spirometry/RefCalculator.html
">http://www.cdc.gov/niosh/topic...ry/RefCalculator.html
</a>
I enter in the knowns, and it gives me the numbers I was looking for to create my graph! So Cool!

Additionally, someone from this site, and my doctor emailed me this link:
<a target=_blank class=ftalternatingbarlinklarge href="http://www.hopkinsmedicine.org/pftlab/predicted.html
">http://www.hopkinsmedicine.org.../predicted.html
</a>

In case anyone else wanted to make their own chart.
 

CaliSally

New member
It's not that I'm obsessing over numbers perse. My purpose is to create my own personal graph, to follow my trends. Although I get the pft log from my doctor, the trends are better seen and understood when in visual form, like a graph. They give me a graph sometimes, but I want my own.

That aside, I did locate this site which has a Spirometry Reference Value Calculator:
<a target=_blank class=ftalternatingbarlinklarge href="http://www.cdc.gov/niosh/topics/spirometry/RefCalculator.html
">http://www.cdc.gov/niosh/topic...ry/RefCalculator.html
</a>
I enter in the knowns, and it gives me the numbers I was looking for to create my graph! So Cool!

Additionally, someone from this site, and my doctor emailed me this link:
<a target=_blank class=ftalternatingbarlinklarge href="http://www.hopkinsmedicine.org/pftlab/predicted.html
">http://www.hopkinsmedicine.org.../predicted.html
</a>

In case anyone else wanted to make their own chart.
 

CaliSally

New member
It's not that I'm obsessing over numbers perse. My purpose is to create my own personal graph, to follow my trends. Although I get the pft log from my doctor, the trends are better seen and understood when in visual form, like a graph. They give me a graph sometimes, but I want my own.
<br />
<br />That aside, I did locate this site which has a Spirometry Reference Value Calculator:
<br /><a target=_blank class=ftalternatingbarlinklarge href="http://www.cdc.gov/niosh/topics/spirometry/RefCalculator.html
">http://www.cdc.gov/niosh/topic...ry/RefCalculator.html
</a><br />
<br />I enter in the knowns, and it gives me the numbers I was looking for to create my graph! So Cool!
<br />
<br />Additionally, someone from this site, and my doctor emailed me this link:
<br /><a target=_blank class=ftalternatingbarlinklarge href="http://www.hopkinsmedicine.org/pftlab/predicted.html
<br />">http://www.hopkinsmedicine.org.../predicted.html
<br /></a>
<br />
<br />In case anyone else wanted to make their own chart.
 

juliepie

New member
sally, I do the same thing (i'm such a geek sometimes). I just graph the actual FEV-1 number in liters, since I get that every single time I go. The % predicted can change depending on the reference they put into the computer (if I go to the adult lab it's an adult scale and if I go to the children's lab it's a pediatric scale). Plus, the predicted scale changes depending on my weight at the time. The raw number itself is just easier for me to look at.
 

juliepie

New member
sally, I do the same thing (i'm such a geek sometimes). I just graph the actual FEV-1 number in liters, since I get that every single time I go. The % predicted can change depending on the reference they put into the computer (if I go to the adult lab it's an adult scale and if I go to the children's lab it's a pediatric scale). Plus, the predicted scale changes depending on my weight at the time. The raw number itself is just easier for me to look at.
 

juliepie

New member
sally, I do the same thing (i'm such a geek sometimes). I just graph the actual FEV-1 number in liters, since I get that every single time I go. The % predicted can change depending on the reference they put into the computer (if I go to the adult lab it's an adult scale and if I go to the children's lab it's a pediatric scale). Plus, the predicted scale changes depending on my weight at the time. The raw number itself is just easier for me to look at.
 

juliepie

New member
sally, I do the same thing (i'm such a geek sometimes). I just graph the actual FEV-1 number in liters, since I get that every single time I go. The % predicted can change depending on the reference they put into the computer (if I go to the adult lab it's an adult scale and if I go to the children's lab it's a pediatric scale). Plus, the predicted scale changes depending on my weight at the time. The raw number itself is just easier for me to look at.
 

juliepie

New member
sally, I do the same thing (i'm such a geek sometimes). I just graph the actual FEV-1 number in liters, since I get that every single time I go. The % predicted can change depending on the reference they put into the computer (if I go to the adult lab it's an adult scale and if I go to the children's lab it's a pediatric scale). Plus, the predicted scale changes depending on my weight at the time. The raw number itself is just easier for me to look at.
 

lightNlife

New member
Those numbers aren't necessarily accurate and aren't the best reference to use in determining your own predicted numbers. Determining the range of "normal" PFTs was done by 8 doctors who sampled a population of people w/o respiratory disease. The "normal" value that appears on your readouts is based on your height, weight, and sex and is compared to the normals that the 8 doctors came up with. The problem is that these numbers are not universal. Your normal could be very different depending on whether you have a longer torso, wider trunk, or are African-American. Also, the numbers used by pediatric CF clinics tend to be inflated. It's very common for a person who was considered %115 of normal predicted at a peds clinic to produce a test that shows they are only %98 of predicted.

When you're comparing your own numbers, focus on the actual volume (in Liters) NOT the percentages. After all, that's what the doctors do.

I have a Microlife spirometer at home as well as the software that charts my results. With it I can measure my PEF and FEV1.
 

lightNlife

New member
Those numbers aren't necessarily accurate and aren't the best reference to use in determining your own predicted numbers. Determining the range of "normal" PFTs was done by 8 doctors who sampled a population of people w/o respiratory disease. The "normal" value that appears on your readouts is based on your height, weight, and sex and is compared to the normals that the 8 doctors came up with. The problem is that these numbers are not universal. Your normal could be very different depending on whether you have a longer torso, wider trunk, or are African-American. Also, the numbers used by pediatric CF clinics tend to be inflated. It's very common for a person who was considered %115 of normal predicted at a peds clinic to produce a test that shows they are only %98 of predicted.

When you're comparing your own numbers, focus on the actual volume (in Liters) NOT the percentages. After all, that's what the doctors do.

I have a Microlife spirometer at home as well as the software that charts my results. With it I can measure my PEF and FEV1.
 

lightNlife

New member
Those numbers aren't necessarily accurate and aren't the best reference to use in determining your own predicted numbers. Determining the range of "normal" PFTs was done by 8 doctors who sampled a population of people w/o respiratory disease. The "normal" value that appears on your readouts is based on your height, weight, and sex and is compared to the normals that the 8 doctors came up with. The problem is that these numbers are not universal. Your normal could be very different depending on whether you have a longer torso, wider trunk, or are African-American. Also, the numbers used by pediatric CF clinics tend to be inflated. It's very common for a person who was considered %115 of normal predicted at a peds clinic to produce a test that shows they are only %98 of predicted.

When you're comparing your own numbers, focus on the actual volume (in Liters) NOT the percentages. After all, that's what the doctors do.

I have a Microlife spirometer at home as well as the software that charts my results. With it I can measure my PEF and FEV1.
 

lightNlife

New member
Those numbers aren't necessarily accurate and aren't the best reference to use in determining your own predicted numbers. Determining the range of "normal" PFTs was done by 8 doctors who sampled a population of people w/o respiratory disease. The "normal" value that appears on your readouts is based on your height, weight, and sex and is compared to the normals that the 8 doctors came up with. The problem is that these numbers are not universal. Your normal could be very different depending on whether you have a longer torso, wider trunk, or are African-American. Also, the numbers used by pediatric CF clinics tend to be inflated. It's very common for a person who was considered %115 of normal predicted at a peds clinic to produce a test that shows they are only %98 of predicted.

When you're comparing your own numbers, focus on the actual volume (in Liters) NOT the percentages. After all, that's what the doctors do.

I have a Microlife spirometer at home as well as the software that charts my results. With it I can measure my PEF and FEV1.
 

lightNlife

New member
Those numbers aren't necessarily accurate and aren't the best reference to use in determining your own predicted numbers. Determining the range of "normal" PFTs was done by 8 doctors who sampled a population of people w/o respiratory disease. The "normal" value that appears on your readouts is based on your height, weight, and sex and is compared to the normals that the 8 doctors came up with. The problem is that these numbers are not universal. Your normal could be very different depending on whether you have a longer torso, wider trunk, or are African-American. Also, the numbers used by pediatric CF clinics tend to be inflated. It's very common for a person who was considered %115 of normal predicted at a peds clinic to produce a test that shows they are only %98 of predicted.
<br />
<br />When you're comparing your own numbers, focus on the actual volume (in Liters) NOT the percentages. After all, that's what the doctors do.
<br />
<br />I have a Microlife spirometer at home as well as the software that charts my results. With it I can measure my PEF and FEV1.
 
Top