search for: adenpv07

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2008 Mar 20
1
Use of Factors
...& cpx_interp$xl==0] [1] 62.5252140470478 67.6151493460742 68.3931063786315 78.6591518601803 59.7674671000443 90 Levels: 62.5252140470478 66.046907240618 69.5686004341883 69.8766646005142 71.9631282463843 ... 85.4270562298357 > cpx_interp$SubjId[cpx_interp$visit==1 & cpx_interp$xl==0] [1] ADENPV07 ADENPVJN ADENPV0Z ADENPVM9 ADENPVMB Levels: ADENPV07 ADENPVJN ADENPV0Z ADENPVM9 ADENPVMB Why is the $HR variable listed as "90 levels" as if it is a factor? Why is it not treated as floating point to get simple mean? Here is how the HR values are generated: # create the array interp_ou...