00:01
Okay, this question says, in a cohort study concerning the relationship between alcoholic cirrhosis and the subsequent risk of hepatic encephalopathy, 1 ,000 results were followed between 2012 and 2014.
00:17
Among 500 patients with alcohol cirrhosis, 300 were found to have developed hepatic encephalopathy.
00:24
And among 500 patients without alcohol cirrhosis, 100 developed hepatic encephalopathy.
00:32
Let's first create a 2x2 table according to this, okay? so here you're going to have first, hepatic encephalopathy, and here you're going to have non -hepatic encephalopathy, like this.
01:08
Now, here you're going to have, in this case, cirrhosis, cirrhosis positive, and cirrhosis negative, something like this.
01:40
Okay, now let's read again the information.
01:42
It says that among 500 patients with alcohol cirrhosis, it means 500 patients with alcohol cirrhosis, 300 were found to have developed hepatic encephalopathy, so you have here 300, so you have 200 here.
02:02
Among 500 patients without alcohol cirrhosis, you have here, 100 developed hepatic encephalopathy, so you have 100 here, so it means you have 400 here.
02:14
So you have 400 and you have 600...