Coding Help

@avimintz This code contains minor improvements and additional logging:

Qualtrics.SurveyEngine.addOnReady(function() {
    // Convert Likert scale responses to numerical values
    function likertToNumeric(value) {
        const scale = {
            "Never": 1,
            "Almost never": 2,
            "Sometimes": 3,
            "Often": 4,
            "Almost always": 5
        };
        if (scale[value] !== undefined) {
            return scale[value];
        } else {
            console.log("Unexpected value: " + value);
            return 0; // default to 0 if value not found
        }
    }

    // Calculate sum of responses
    function calculateSum(variables) {
        return variables.reduce(function(accumulator, current) {
            var response = Qualtrics.SurveyEngine.getEmbeddedData(current);
            console.log(current + ": " + response); // Debugging: Log each response value
            return accumulator + likertToNumeric(response);
        }, 0);
    }

    // Calculate T-score
    function calculateTScore(sum, mean, sd) {
        var tScore = 50 + 10 * ((sum - mean) / sd);
        console.log("Calculated T-Score: " + tScore); // Debugging: Log calculated T-Score
        return tScore;
    }

    function mapTscoreToPercentile(tScore) {
        if (tScore >= 66) return 95;
        if (tScore == 65) return 94;
        if (tScore == 64) return 92;
        if (tScore == 63) return 91;
        if (tScore == 62) return 88;
        if (tScore == 61) return 87;
        if (tScore == 60) return 84;
        if (tScore == 59) return 82;
        if (tScore == 58) return 79;
        if (tScore == 57) return 77;
        if (tScore == 56) return 73;
        if (tScore == 55) return 70;
        if (tScore == 54) return 66;
        if (tScore == 53) return 61;
        if (tScore == 52) return 58;
        if (tScore == 51) return 55;
        if (tScore == 50) return 50;
        if (tScore == 49) return 45;
        if (tScore == 48) return 42;
        if (tScore == 47) return 39;
        if (tScore == 46) return 34;
        if (tScore == 45) return 32;
        if (tScore == 44) return 27;
        if (tScore == 43) return 25;
        if (tScore == 42) return 21;
        if (tScore == 41) return 19;
        if (tScore == 40) return 16;
        if (tScore == 39) return 14;
        if (tScore == 38) return 12;
        if (tScore == 37) return 10;
        if (tScore == 36) return 8;
        if (tScore == 35) return 7;
        if (tScore == 34) return 5;
        if (tScore == 33) return 5;
        if (tScore == 32) return 4;
        if (tScore == 31) return 3;
        if (tScore == 30) return 2;
        if (tScore == 29) return 2;
        if (tScore <= 28) return 1;
    }

    var firstGroup = ['stress24', 'piling24', 'overwh24', 'unable24'];
    var secondGroup = ['throw24', 'staym24', 'yell24', 'angry24'];
    var firstGroupMean = 12.5740;
    var firstGroupSD = 4.73907;
    var secondGroupMean = 10.5049;
    var secondGroupSD = 4.66062;

    // Calculate sums, T-scores, and Percentiles
    var firstSum = calculateSum(firstGroup);
    var secondSum = calculateSum(secondGroup);
    console.log("First Sum: " + firstSum);  // Debugging: Log calculated sum
    console.log("Second Sum: " + secondSum);  // Debugging: Log calculated sum

    var firstTScore = calculateTScore(firstSum, firstGroupMean, firstGroupSD);
    var secondTScore = calculateTScore(secondSum, secondGroupMean, secondGroupSD);

    var firstPercentile = mapTscoreToPercentile(firstTScore);
    var secondPercentile = mapTscoreToPercentile(secondTScore);

    // Set embedded data
    Qualtrics.SurveyEngine.setEmbeddedData('pstresst', firstTScore);
    Qualtrics.SurveyEngine.setEmbeddedData('pstressp', firstPercentile);
    Qualtrics.SurveyEngine.setEmbeddedData('angert', secondTScore);
    Qualtrics.SurveyEngine.setEmbeddedData('angerp', secondPercentile);
});

Best
Christian