35 lines
1.1 KiB
TypeScript
35 lines
1.1 KiB
TypeScript
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/**
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* PCQ-24 Reverse Scoring Configuration
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*
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* Reverse scoring formula: 7 - rawValue
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* After reversal, a value of 1 becomes 6, 2 becomes 5, 3 becomes 4, etc.
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*
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* Reverse-scored questions (as specified):
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* - pcq_13 (Question 13 — Resilience dimension)
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* - pcq_20 (Question 20 — Optimism dimension)
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* - pcq_23 (Question 23 — Optimism dimension)
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*
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* Scale: 1–6
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* Reversed: 1→6, 2→5, 3→4, 4→3, 5→2, 6→1
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*/
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import type { PcqLikertValue } from '@/config/pcq24';
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/** Set of question IDs that must be reverse-scored */
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export const REVERSE_SCORED_QUESTIONS = new Set<string>(['pcq_13', 'pcq_20', 'pcq_23']);
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/** Returns true if the given question ID is reverse-scored */
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export function isReverseScored(questionId: string): boolean {
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return REVERSE_SCORED_QUESTIONS.has(questionId);
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}
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/**
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* Apply the PCQ-24 reverse scoring formula: 7 − rawValue
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*
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* @param rawValue - Likert value as string or number (expected 1–6)
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* @returns reversed score (6→1, 5→2, 4→3, 3→4, 2→5, 1→6)
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*/
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export function applyReverseScoring(rawValue: PcqLikertValue | string): number {
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return 7 - Number(rawValue);
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}
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