by **caryn** » Wed Jun 16, 2010 08:39 am

The study says The body mass index (BMI) was used to classify women as normal weight (BMI = 18.5-24.9 kg/m(2)), class I obesity (BMI = 30-34.9 kg/m(2)), class II obesity (BMI = 35-39.9 kg/m(2)), class III obesity (BMI = 40-49.9 kg/m(2)) or super-obesity (BMI > or = 50 kg/m(2)). If you go to

this NHLBI site you can enter your height and weight and it will calculate your BMI for you.

I was remembering one part of the study and not the other. The odds ratio for women with a BMI equal to or greater than 30 was 2.56 -- this means they are 2.56 times more likely than women of normal weight to develop PE. I called this around twice as likely, although it's really right in the middle between two and three and technically you'd round up to three. Since normal risk is 1:20, we multiply 1 by 2.56 and get 2.56:20, or about two and a half jokers in a deck of 20.

Of course, you can't have two and a half jokers in 20 cards. But you can have 5 jokers in 40 cards. :)

But the thing I didn't mention was the odds ratio for super-obese women with a BMI greater than 50, which was 7.52. So they have seven and a half jokers in a deck of 20, or 15 in a deck of 40.

I got the numbers for risk by gestational risk from the Expert comments

here, but those are for the whole population of women who develop symptoms at that time. In an individual consult, a doc can take your particular set of risk factors into account, and that might well change the estimate of your risk. So, I suspect your risk got downgraded because when they assessed all your underlying conditions, you looked more like a 30% type of person. :)

The study says The body mass index (BMI) was used to classify women as normal weight (BMI = 18.5-24.9 kg/m(2)), class I obesity (BMI = 30-34.9 kg/m(2)), class II obesity (BMI = 35-39.9 kg/m(2)), class III obesity (BMI = 40-49.9 kg/m(2)) or super-obesity (BMI > or = 50 kg/m(2)). If you go to [url=http://www.nhlbisupport.com/bmi/]this NHLBI site[/url] you can enter your height and weight and it will calculate your BMI for you.

I was remembering one part of the study and not the other. The odds ratio for women with a BMI equal to or greater than 30 was 2.56 -- this means they are 2.56 times more likely than women of normal weight to develop PE. I called this around twice as likely, although it's really right in the middle between two and three and technically you'd round up to three. Since normal risk is 1:20, we multiply 1 by 2.56 and get 2.56:20, or about two and a half jokers in a deck of 20.

Of course, you can't have two and a half jokers in 20 cards. But you can have 5 jokers in 40 cards. :)

But the thing I didn't mention was the odds ratio for super-obese women with a BMI greater than 50, which was 7.52. So they have seven and a half jokers in a deck of 20, or 15 in a deck of 40.

I got the numbers for risk by gestational risk from the Expert comments [url=http://www.preeclampsia.org/forum/viewtopic.php?t=331]here[/url], but those are for the whole population of women who develop symptoms at that time. In an individual consult, a doc can take your particular set of risk factors into account, and that might well change the estimate of your risk. So, I suspect your risk got downgraded because when they assessed all your underlying conditions, you looked more like a 30% type of person. :)