Prolonged use of certain progestogen hormone drugs is associated with an increased risk of developing a type of brain tumor known as an intracranial meningioma, finds a study from France published by The BMJ today.
“Each cased was matched…” what does this sentence mean? It sounds like in their data set 1 in 6 got the surgical treatment, does that mean it is that likely to get it?
In the study, they compared each case of a woman who received surgery for meningioma to five other women who did not, matching them with five people of similar age and location to control for those variables. Then they got medical histories on all the women to see how these hormonal therapies impacted meningioma rates
“Each cased was matched…” what does this sentence mean? It sounds like in their data set 1 in 6 got the surgical treatment, does that mean it is that likely to get it?
In the study, they compared each case of a woman who received surgery for meningioma to five other women who did not, matching them with five people of similar age and location to control for those variables. Then they got medical histories on all the women to see how these hormonal therapies impacted meningioma rates
Ah, that makes more sense. Thanks