Dear colleagues,
I have to report incidence rates for spontaneous pneumothorax, which from a study has an incidence in males of 19.3 and 8.1 in females(per 100000). I wanted to report a general incidence but should I standardize this value for sex or I can just do the mean? eg. (19.3+8.1)/2
thank you for your guidance
I think you should go for mean. Mean can be genralized and used as main character.
Dear Andrea
Who are your studied population? are the patients presenting with respiratory symptoms or general patients attending a medical facility?
Suppose you studied 500 males and 300 females and found 30 males and 13 females with spontaneous pneumothorax
Then
IR among males =( 30/500)x 1000= 60.0 per 1000 males
IR among females = (13/300)x 1000=43.3 per 1000
IR among both gender together = (43/800)x1000= 53.8
The relative risk of pneum in males as compared to females = 60/43.3=1.4
Note: This is only basic statistical analysis
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