mikemoi
77 lines
3.5 KiB
TypeScript
77 lines
3.5 KiB
TypeScript
import { QuestionType } from "@/types";
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/**
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* Yale-Brown Obsessive Compulsive Scale calculator parameters interface
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*/
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interface YBOCSCalculatorProps {
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/** Answer data, key is question ID, value is selected score */
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answers: { [key: number]: string };
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/** Questions list */
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questions: QuestionType[];
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}
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/**
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* Calculate Yale-Brown Obsessive Compulsive Scale (Y-BOCS) results
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*
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* @param answers - User answer data, containing question ID and selected score
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* @returns Calculation results, including total score, factor scores, severity level and other information
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*/
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export const calculateYBOCSResults = ({ answers }: YBOCSCalculatorProps): any => {
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// Y-BOCS Obsessive Compulsive Scale calculation logic
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let totalScore = 0;
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// Subscale score initialization: obsessions (questions 1-5) and compulsions (questions 6-10)
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let obsessionScore = 0; // Obsessions subscale score
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let compulsionScore = 0; // Compulsions subscale score
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// Calculate total score and subscale scores
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Object.entries(answers).forEach(([questionId, score]) => {
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const questionNum = parseInt(questionId); // Question number
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const scoreValue = parseInt(score); // Selected score value
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totalScore += scoreValue; // Accumulate total score
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// Subscale score calculation: distinguish between obsessions and compulsions
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if (questionNum >= 1 && questionNum <= 5) {
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// Obsessions subscale (questions 1-5)
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obsessionScore += scoreValue;
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} else if (questionNum >= 6 && questionNum <= 10) {
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// Compulsions subscale (questions 6-10)
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compulsionScore += scoreValue;
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}
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});
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// Determine severity level of obsessive-compulsive symptoms based on total score
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// 0-7: Normal
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// 8-15: Mild obsessive-compulsive symptoms
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// 16-23: Moderate obsessive-compulsive symptoms
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// 24-31: Severe obsessive-compulsive symptoms
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// 32-40: Extremely severe obsessive-compulsive symptoms
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let severity = "normal"; // Default to normal
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if (totalScore >= 8 && totalScore <= 15) {
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severity = "mild"; // Mild obsessive-compulsive symptoms
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} else if (totalScore >= 16 && totalScore <= 23) {
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severity = "moderate"; // Moderate obsessive-compulsive symptoms
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} else if (totalScore >= 24 && totalScore <= 31) {
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severity = "severe"; // Severe obsessive-compulsive symptoms
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} else if (totalScore >= 32) {
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severity = "extreme"; // Extremely severe obsessive-compulsive symptoms
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}
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// Calculate factor scores (obsessions subscale and compulsions subscale)
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// These factor scores can be used to analyze symptom characteristics and intervention directions
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const factorScores: { [key: string]: number } = {
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"obsession": obsessionScore, // Obsessions score
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"compulsion": compulsionScore // Compulsions score
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};
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// Return complete calculation results
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return {
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totalScore, // Total score
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factorScores, // Factor scores (including obsessions and compulsions)
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positiveItemCount: Object.values(answers).filter(score => parseInt(score) >= 1).length, // Positive item count (number of items with score ≥1)
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positiveItemAverage: totalScore / Object.keys(answers).length, // Positive item average score
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isSevere: severity === "severe" || severity === "extreme", // Whether it's severe or extremely severe symptoms
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severity // Severity level classification
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};
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};
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