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. 2021 Dec 30;19(1):358. doi: 10.3390/ijerph19010358

Table 5.

True conditions, cutoff values, and percentage of ‘addicted’ youth when highest Youden Index is used as the decision rule.

Sample Youden Index True Condition 1 Cutoff Value % Addicted
Spain 1 0.462 DSM 30 36.0
Spain 2 0.485 ADSM 31 23.2
Spain 3 0.546 ASM 31 27.2
Argentina 0.659 SM 38 16.5
Chile 0.469 AM 35 37.8
Colombia 0.418 ADSM 28 58.3
Ecuador 0.432 ADSM 35 24.3
El Salvador 0.445 ADSM 36 34.6
Guatemala 0.318 SM 26 52.7
México 0.566 ADSM 32 35.0
Perú 0.393 DSM 36 28.8
Uruguay 0.656 DSM 34 32.6
Venezuela 0.478 SM 33 36.2

1 True conditions are combinations of: A: severe anxiety; D: severe depression; S: severe stress; M: more than 4 h per day on social media.