% 1. Title: Horse Colic database% % 2. Source Information%    -- Creators: Mary McLeish & Matt Cecile% 	  	Department of Computer Science% 		University of Guelph% 		Guelph, Ontario, Canada N1G 2W1% 		mdmcleish@water.waterloo.edu%    -- Donor:    Will Taylor (taylor@pluto.arc.nasa.gov)%    -- Date:     8/6/89% % 3. Past Usage:%    -- Unknown% % 4. Relevant Information:% %    -- 2 data files %       -- horse-colic.data: 300 training instances%       -- horse-colic.test: 68 test instances%    -- Possible class attributes: 24 (whether lesion is surgical)%      -- others include: 23, 25, 26, and 27%    -- Many Data types: (continuous, discrete, and nominal)% % 5. Number of Instances: 368 (300 for training, 68 for testing)% % 6. Number of attributes: 28% % 7. Attribute Information:% %   1:  surgery?%           1 = Yes, it had surgery%           2 = It was treated without surgery% %   2:  Age %           1 = Adult horse%           2 = Young (< 6 months)% %   3:  Hospital Number %           - numeric id%           - the case number assigned to the horse%             (may not be unique if the horse is treated > 1 time)% %   4:  rectal temperature%           - linear%           - in degrees celsius.%           - An elevated temp may occur due to infection.%           - temperature may be reduced when the animal is in late shock%           - normal temp is 37.8%           - this parameter will usually change as the problem progresses%                eg. may start out normal, then become elevated because of%                    the lesion, passing back through the normal range as the%                    horse goes into shock%   5:  pulse %           - linear%           - the heart rate in beats per minute%           - is a reflection of the heart condition: 30 -40 is normal for adults%           - rare to have a lower than normal rate although athletic horses%             may have a rate of 20-25%           - animals with painful lesions or suffering from circulatory shock%             may have an elevated heart rate% %   6:  respiratory rate%           - linear%           - normal rate is 8 to 10%           - usefulness is doubtful due to the great fluctuations% %   7:  temperature of extremities%           - a subjective indication of peripheral circulation%           - possible values:%                1 = Normal%                2 = Warm%                3 = Cool%                4 = Cold%           - cool to cold extremities indicate possible shock%           - hot extremities should correlate with an elevated rectal temp.% %   8:  peripheral pulse%           - subjective%           - possible values are:%                1 = normal%                2 = increased%                3 = reduced%                4 = absent%           - normal or increased p.p. are indicative of adequate circulation%             while reduced or absent indicate poor perfusion% %   9:  mucous membranes%           - a subjective measurement of colour%           - possible values are:%                1 = normal pink%                2 = bright pink%                3 = pale pink%                4 = pale cyanotic%                5 = bright red / injected%                6 = dark cyanotic%           - 1 and 2 probably indicate a normal or slightly increased%             circulation%           - 3 may occur in early shock%           - 4 and 6 are indicative of serious circulatory compromise%           - 5 is more indicative of a septicemia% %  10: capillary refill time%           - a clinical judgement. The longer the refill, the poorer the%             circulation%           - possible values%                1 = < 3 seconds%                2 = >= 3 seconds% %  11: pain - a subjective judgement of the horse's pain level%           - possible values:%                1 = alert, no pain%                2 = depressed%                3 = intermittent mild pain%                4 = intermittent severe pain%                5 = continuous severe pain%           - should NOT be treated as a ordered or discrete variable!%           - In general, the more painful, the more likely it is to require%             surgery%           - prior treatment of pain may mask the pain level to some extent% %  12: peristalsis                              %           - an indication of the activity in the horse's gut. As the gut%             becomes more distended or the horse becomes more toxic, the%             activity decreases%           - possible values:%                1 = hypermotile%                2 = normal%                3 = hypomotile%                4 = absent% %  13: abdominal distension%           - An IMPORTANT parameter.%           - possible values%                1 = none%                2 = slight%                3 = moderate%                4 = severe%           - an animal with abdominal distension is likely to be painful and%             have reduced gut motility.%           - a horse with severe abdominal distension is likely to require%             surgery just tio relieve the pressure% %  14: nasogastric tube%           - this refers to any gas coming out of the tube%           - possible values:%                1 = none%                2 = slight%                3 = significant%           - a large gas cap in the stomach is likely to give the horse%             discomfort% %  15: nasogastric reflux%           - possible values%                1 = none%                2 = > 1 liter%                3 = < 1 liter%           - the greater amount of reflux, the more likelihood that there is%             some serious obstruction to the fluid passage from the rest of%             the intestine% %  16: nasogastric reflux PH%           - linear%           - scale is from 0 to 14 with 7 being neutral%           - normal values are in the 3 to 4 range% %  17: rectal examination - feces%           - possible values%                1 = normal%                2 = increased%                3 = decreased%                4 = absent%           - absent feces probably indicates an obstruction% %  18: abdomen%           - possible values%                1 = normal%                2 = other%                3 = firm feces in the large intestine%                4 = distended small intestine%                5 = distended large intestine%           - 3 is probably an obstruction caused by a mechanical impaction%             and is normally treated medically%           - 4 and 5 indicate a surgical lesion% %  19: packed cell volume%           - linear%           - the # of red cells by volume in the blood%           - normal range is 30 to 50. The level rises as the circulation%             becomes compromised or as the animal becomes dehydrated.% %  20: total protein%           - linear%           - normal values lie in the 6-7.5 (gms/dL) range%           - the higher the value the greater the dehydration% %  21: abdominocentesis appearance%           - a needle is put in the horse's abdomen and fluid is obtained from%             the abdominal cavity%           - possible values:%                1 = clear%                2 = cloudy%                3 = serosanguinous%           - normal fluid is clear while cloudy or serosanguinous indicates%             a compromised gut% %  22: abdomcentesis total protein%           - linear%           - the higher the level of protein the more likely it is to have a%             compromised gut. Values are in gms/dL% %  23: outcome%           - what eventually happened to the horse?%           - possible values:%                1 = lived%                2 = died%                3 = was euthanized% %  24: surgical lesion?%           - retrospectively, was the problem (lesion) surgical?%           - all cases are either operated upon or autopsied so that%             this value and the lesion type are always known%           - possible values:%                1 = Yes%                2 = No% %  25, 26, 27: type of lesion%           - first number is site of lesion%                1 = gastric%                2 = sm intestine%                3 = lg colon%                4 = lg colon and cecum%                5 = cecum%                6 = transverse colon%                7 = retum/descending colon%                8 = uterus