Fwd: Sensitivity, Specificity and ROC Curve

[salman_stats]

Any one who could help me about sensitivity, specificity and ROC Curve. I've three variables one is numeric and others are categorical listed below,

1. total neutrophil   2. CRP (Positive, Negative)    3. Blood Culture(Positive, Negative)

I would like to calculate sensitivities, specificities and ROC Curve of total neutrophil by using CRP and Blood Culture as gold standard.

I will be pleased to provide further information you may need and waiting your consecutive responses as well.

Reg,

Salman

[Bruce Weaver]

You might get more help if you pose a more specific question.  What have you tried so far?  For example, have you gone to the dialog for ROC analysis and clicked on Help?  

http://publib.boulder.ibm.com/infocenter/spssstat/v20r0m0/index.jsp?topic=%2Fcom.ibm.spss.statistics.help%2Fsyn_roc.htm

http://publib.boulder.ibm.com/infocenter/spssstat/v20r0m0/index.jsp?topic=%2Fcom.ibm.spss.statistics.help%2Fsyn_roc.htm  -- click the Show Me link

HTH.

salman_stats wrote

Any one who could help me about sensitivity, specificity and ROC Curve.
I've three variables one is numeric and others are categorical listed
below,

1. total neutrophil   2. CRP (Positive, Negative)    3. Blood
Culture(Positive, Negative)

I would like to calculate sensitivities, specificities and ROC Curve of
total neutrophil by using CRP and Blood Culture as gold standard.

I will be pleased to provide further information you may need and waiting
your consecutive responses as well.

Reg,
Salman