forked from LufsX/Experiment-LogReg
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Executable File
250 lines
9.4 KiB
Plaintext
Executable File
(Message inbox:6)
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Received: from charon.arc.nasa.gov by ICS.UCI.EDU id aa10794; 6 Aug 89 16:05 PDT
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Received: from HALEAKALA.arc.nasa.gov by CHARON.arc.nasa.gov via INTERNET with SMTP id 40376; 6 Aug 89 16:03:21 PDT
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Date: Sun, 6 Aug 89 16:06 PDT
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From: will taylor <taylor@CHARON.arc.nasa.GOV>
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Subject: Horse Colic DB - 1 of 3
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To: aha@ICS.UCI.EDU
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Message-ID: <19890806230616.2.TAYLOR@HALEAKALA.arc.nasa.gov>
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Source of database:
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- Mary McLeish & Matt Cecile
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Dept. of Computer Science
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U. of Guelph
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Guelph, Ontario, Canada N1G 2W1
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mdmcleish@water.waterloo.edu
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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Date: Sat, 5 Aug 89 09:40:08 EDT
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From: mdmcleish@water.waterloo.edu
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Message-Id: <8908051340.AA29845@water.waterloo.edu>
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To: taylor@pluto.arc.nasa.gov
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HORSE COLIC DOMAIN: DESCRIPTION OF DATA
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=======================================
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The data is supplied in two files. The first contains 300 horse
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colic cases that should be used for training data while the second contains
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68 cases that can be used for testing the performance of your method.
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The variable that we have tended to try and predict is V24, that is, whether
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or not the lesion is surgical. Other variables of interest are outcome, V23,
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and lesion types, V25,V26,V27.
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The sample contains approx. 30% missing values (indicated by a zero in the
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data provided). You will need to deal with all types of variables (continuous,
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discrete, and nominal) as well as the missing values in your method.
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VARIABLES:
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==========
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V1: surgery?
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1 = Yes, it had surgery
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2 = It was treated without surgery
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V2: Age
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1 = Adult horse
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2 = Young (< 6 months)
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V3: Hospital Number
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- the case number assigned to the horse
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(may not be unique if the horse is treated > 1 time)
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V4: rectal temperature
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- in degrees celsius.
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- An elevated temp may occur due to infection.
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- temperature may be reduced when the animal is in late shock
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- normal temp is 37.8
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- this parameter will usually change as the problem progresses
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eg. may start out normal, then become elevated because of
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the lesion, passing back through the normal range as the
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horse goes into shock
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V5: pulse
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- the heart rate in beats per minute
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- is a reflection of the heart condition: 30 -40 is normal for adults
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- rare to have a lower than normal rate although athletic horses
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may have a rate of 20-25
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- animals with painful lesions or suffering from circulatory shock
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may have an elevated heart rate
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V6: respiratory rate
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- normal rate is 8 to 10
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- usefulness is doubtful due to the great fluctuations
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V7: temperature of extremities
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- a subjective indication of peripheral circulation
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- possible values:
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1 = Normal
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2 = Warm
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3 = Cool
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4 = Cold
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- cool to cold extremities indicate possible shock
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- hot extremities should correlate with an elevated rectal temp.
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V8: peripheral pulse
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- subjective
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- possible values are:
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1 = normal
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2 = increased
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3 = reduced
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4 = absent
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- normal or increased p.p. are indicative of adequate circulation
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while reduced or absent indicate poor perfusion
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V9: mucous membranes
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- a subjective measurement of colour
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- possible values are:
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1 = normal pink
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2 = bright pink
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3 = pale pink
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4 = pale cyanotic
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5 = bright red / injected
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6 = dark cyanotic
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- 1 and 2 probably indicate a normal or slightly increased
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circulation
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- 3 may occur in early shock
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- 4 and 6 are indicative of serious circulatory compromise
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- 5 is more indicative of a septicemia
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V10: capillary refill time
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- a clinical judgement. The longer the refill, the poorer the
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circulation
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- possible values
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1 = < 3 seconds
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2 = >= 3 seconds
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V11: pain
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- a subjective judgement of the horse's pain level
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- possible values:
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1 = alert, no pain
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2 = depressed
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3 = intermittent mild pain
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4 = intermittent severe pain
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5 = continuous severe pain
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- should NOT be treated as a ordered or discrete variable!
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- In general, the more painful, the more likely it is to require
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surgery
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- prior treatment of pain may mask the pain level to some extent
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V12: peristalsis
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- an indication of the activity in the horse's gut. As the gut
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becomes more distended or the horse becomes more toxic, the
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activity decreases
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- possible values:
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1 = hypermotile
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2 = normal
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3 = hypomotile
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4 = absent
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V13: abdominal distension
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- An IMPORTANT parameter.
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- possible values
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1 = none
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2 = slight
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3 = moderate
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4 = severe
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- an animal with abdominal distension is likely to be painful and
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have reduced gut motility.
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- a horse with severe abdominal distension is likely to require
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surgery just tio relieve the pressure
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V14: nasogastric tube
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- this refers to any gas coming out of the tube
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- possible values:
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1 = none
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2 = slight
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3 = significant
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- a large gas cap in the stomach is likely to give the horse
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discomfort
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V15: nasogastric reflux
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- possible values
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1 = none
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2 = > 1 liter
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3 = < 1 liter
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- the greater amount of reflux, the more likelihood that there is
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some serious obstruction to the fluid passage from the rest of
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the intestine
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V16: nasogastric reflux PH
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- scale is from 0 to 14 with 7 being neutral
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- normal values are in the 3 to 4 range
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V17: rectal examination - feces
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- possible values
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1 = normal
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2 = increased
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3 = decreased
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4 = absent
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- absent feces probably indicates an obstruction
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V18: abdomen
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- possible values
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1 = normal
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2 = other
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3 = firm feces in the large intestine
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4 = distended small intestine
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5 = distended large intestine
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- 3 is probably an obstruction caused by a mechanical impaction
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and is normally treated medically
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- 4 and 5 indicate a surgical lesion
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V19: packed cell volume
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- the # of red cells by volume in the blood
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- normal range is 30 to 50. The level rises as the circulation
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becomes compromised or as the animal becomes dehydrated.
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V20: total protein
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- normal values lie in the 6-7.5 (gms/dL) range
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- the higher the value the greater the dehydration
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V21: abdominocentesis appearance
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- a needle is put in the horse's abdomen and fluid is obtained from
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the abdominal cavity
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- possible values:
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1 = clear
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2 = cloudy
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3 = serosanguinous
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- normal fluid is clear while cloudy or serosanguinous indicates
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a compromised gut
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V22: abdomcentesis total protein
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- the higher the level of protein the more likely it is to have a
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compromised gut. Values are in gms/dL
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V23: outcome
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- what eventually happened to the horse?
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- possible values:
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1 = lived
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2 = died
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3 = was euthanized
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V24: surgical lesion?
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- retrospectively, was the problem (lesion) surgical?
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- all cases are either operated upon or autopsied so that
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this value and the lesion type are always known
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- possible values:
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1 = Yes
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2 = No
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V25,V26,V27: type of lesion
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- first number is site of lesion
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1 = gastric
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2 = sm intestine
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3 = lg colon
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4 = lg colon and cecum
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5 = cecum
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6 = transverse colon
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7 = retum/descending colon
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8 = uterus
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9 = bladder
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11 = all intestinal sites
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00 = none
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- second number is type
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1 = simple
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2 = strangulation
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3 = inflammation
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4 = other
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- third number is subtype
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1 = mechanical
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2 = paralytic
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0 = n/a
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- fourth number is specific code
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1 = obturation
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2 = intrinsic
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3 = extrinsic
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4 = adynamic
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5 = volvulus/torsion
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6 = intussuption
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7 = thromboembolic
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8 = hernia
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9 = lipoma/slenic incarceration
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10 = displacement
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0 = n/a
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V28: cp_data
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- is pathology data present for this case?
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1 = Yes
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2 = No
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- this variable is of no significance since pathology data
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is not included or collected for these cases
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