Compare means of 2 variables from admission to discharge

[seltonsy]

Hi,

I have a data with glucose levels at admission and at discharge in 2 different variables. I want to calculate the P-value for the difference in means between these 2 variables. It means, I want to test if there was a significant change in the glucose level with time in this population.

Thanks

SAS Output

Variable

HBA1C_ADM

HBA1C_DIS

Mean

7.1

6.5

SD 

1.0

0.8

 

[Reeza]

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@seltonsy wrote:

Hi,

I have a data with glucose levels at admission and at discharge in 2 different variables. I want to calculate the P-value for the difference in means between these 2 variables. It means, I want to test if there was a significant change in the glucose level with time in this population.

Thanks

SAS Output

Variable

HBA1C_ADM

HBA1C_DIS

Mean

7.1

6.5

SD 

1.0

0.8

 

---

@seltonsy So what is your question to us? Which part, specifically, are you having issues with?

[seltonsy]

sorry if it wasn't clear enough,

I'd like to know what is the proc to use that can perform this test. Compre the means of the two variables and provide p-values (i.e. if the means of the 2 variables are significantly different or not).

Thanks in advance.

[Reeza · Accepted solution]

PROC TTEST or PROC ANOVA

Check both of the examples sections. 

I think, this should be a PAIRED T-Test, so make sure you decide explicitly if it's paired or not. 

[seltonsy]

Thanks,

Paired t test is the right answer I guess,

Here is what I did,

proc ttest data=cohort_1 ;
paired HBA1C_ADM*HBA1C_FIN;
run;