/// <summary>
/// Gets the score for the specificed scale.
/// </summary>
/// <param name="scaleDefinition"></param>
/// <param name="surveyResponses"></param>
/// <returns></returns>
private int GetScaleScore(ScaleDefinition scaleDefinition, IDictionary <string, int> surveyResponses)
{
// get required mappings
Estimation.eScales _scale = scaleDefinition.Scale;
Estimation.eErrors _error = Estimation.eErrors.eNoError;
// create array of responses
int[] _responses = new int[scaleDefinition.NumberOfItems];
for (int i = 0; i < scaleDefinition.NumberOfItems; i++)
{
string questionNum = scaleDefinition.Questions[i];
// set default response
int questionResponse = NO_RESPONSE_VALUE;
// set response value (if applicable)
if (surveyResponses.ContainsKey(questionNum))
{
questionResponse = surveyResponses[questionNum];
}
_responses[i] = questionResponse;
}
// score scale
uint scaleScore = scoringEngine.EstimateQuestionnaireScale(_scale, _responses, out _error);
// check error status
string errorText = QScoreError(_error);
return((int)scaleScore);
}
public BreastQScaleScore GetScaleScore(ScaleDefinition scaleDefinition, int[] scaleResponses)
{
// ask if scale is defined in QScoreLibrary
QScoreLibrary.Estimation.eScales?_scale = null;
// manual scale
ManualScaleDefinition manualScale = null;
_scale = BreastQEngine.GetScale(scaleDefinition.Scale);
Estimation.eErrors scaleError = Estimation.eErrors.eErrorNoResponseData;
int?scaleScore = null;
if (_scale.HasValue)
{
// use breastq assembly to calculate the score
int engineScore = (int)scoringEngine.EstimateQuestionnaireScale(_scale.Value, scaleResponses, out scaleError);
if (scaleError == Estimation.eErrors.eNoError)
{
scaleScore = engineScore;
}
}
else if (manualScaleLookup.TryGetValue(scaleDefinition.Scale, out manualScale))
{
// score manually
int[] convertedResponses = new int[scaleResponses.Length];
for (int i = 0; i < scaleResponses.Length; i++)
{
convertedResponses[i] = manualScale.slope * scaleResponses[i] + manualScale.intercept;
//Some responses saturate.
if (convertedResponses[i] > manualScale.max)
{
convertedResponses[i] = manualScale.max;
}
//0 is an invalid response for all manual scales
if (scaleResponses[i] == 0)
{
convertedResponses[i] = -1;
}
}
int responseSum = convertedResponses.Sum();
int finalScore;
if (!manualScale.ScoreHashTable.TryGetValue(responseSum, out finalScore))
{
//finalScore = -1; //invalid sum
scaleError = Estimation.eErrors.eErrorNoResponseData;
}
else if (scaleResponses.Max() > manualScale.maxResponse)
{
//invalid response
//finalScore = -1;
scaleError = Estimation.eErrors.eErrorImplementationResponsesInvalidValue;
}
else
{
scaleError = Estimation.eErrors.eNoError;
scaleScore = finalScore;
}
}
else if (!string.IsNullOrEmpty(scaleDefinition.Alias))
{
_scale = BreastQEngine.GetScale(scaleDefinition.Alias);
if (_scale.HasValue)
{
// can you call this function recursively?
int engineScore = (int)scoringEngine.EstimateQuestionnaireScale(_scale.Value, scaleResponses, out scaleError);
if (scaleError == Estimation.eErrors.eNoError)
{
scaleScore = engineScore;
}
}
}
BreastQScaleScore breastQScore = new BreastQScaleScore();
// set error code
if (_scale == null && manualScale == null)
{
breastQScore.Error = Estimation.eErrors.eErrorImplementationInvalidScaleEnum;
}
else
{
breastQScore.Error = scaleError;
}
breastQScore.Scale = scaleDefinition;
// set score
if (scaleError == Estimation.eErrors.eNoError && scaleScore.HasValue)
{
breastQScore.Score = (int?)scaleScore;
}
else
{
breastQScore.Score = null;
}
return(breastQScore);
}