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  1. K

    Stats Help needed for a project!

    Hi Stats Fans, I need your help, as I am stuck with data I collected for a project. I am currently gathering responses about mitigation strategies against fatigue. I am questioning people about what mitigation strategies against fatigue they have experienced as helpful. It is a multiple...
  2. C

    Zero Inflated Model(s)

    Hello all, I'm working on a paper on the spatiotemporal distributions and abundances of rock pool fish. Over a couple of years, every month, the same pools were checked for fish presence. The pools were fairly small in size so it was quite easy to identify whether fish were present or not...
  3. T

    #Count change of one variable within other variable

    Hi everyone, hope a smart someone can help me with the following: Data: gvkey coname datadate fyear fyr 143668 MAGMA DESIGN AUTOMATION INC 20060331 2005 3 143668 MAGMA DESIGN AUTOMATION INC 20070331 2006 3 143668 MAGMA DESIGN AUTOMATION INC...
  4. M

    Count values of a variable based on another variable

    How can I count the number os Grantees that have used the ipad to collect participants information. In this case, 2 grantees CA0083 and CA0214 used the ipad. My variables are agency, datamode (excel, ipad and scan). This is a clinet level dataset. DataMode Agency EXCEL IPAD SCAN Total...
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    count frequency

    my dataset looks like this in the beginning: Dosis weight sex 1 0 6.62 m 2 0 6.65 m 3 0 5.78 m 4 0 5.63 m 5 0 6.05 m 6 0 6.48 m 7 0 5.50 m 8 0 5.37...
  6. K

    Question: How to Count Rows in a Way that Aggregate (Unfortunately) Doesn't Work

    I have a very large (> 4 million rows) data set. Let's say this data set consists of information on patients in a hospital & I need to determine the average length of stay (LOS) of my hospital's patients in the ICU. Every row of my data set represents one day & where that patient was on that...
  7. S

    log linear model for dependence

    Hi I fitted a log linear model (proc genmod dist=negative binomial link=log) to see any dependence/association between 3 categorical variables. I know how to evaluate the best model but i have difficulty to explain the following output. parameter p-value...