Kayla R Vanderkruk, Lorna E Deeth, Zeny Feng, Lise A Trotz-Williams
ATQ: alert time quality, an evaluation metric for assessing timely epidemic detection models within a school absenteeism-based surveillance system
BMC public health
develop scale assess infectious diseasespecific health literacy idshl china test initial psychometric properties item pooling reduction assessment psychometric properties conducted scale divided 2 subscales subscale 1 assessed individuals skills preventtreat infectious diseases subscale 2 assessed cognitive ability 2014 9000 people aged 1569 years randomly sampled 3 provinces asked complete idshl questionnaire cronbachs calculated assess reliability exploratory factor analysis ttest correlations receiver operating characteristic roc curve logistic regression used examine validity 22 items subscale 1 content validity index 08 total 8858 people completed scale principal components factor analysis suggested 5factor solution factor loadings 040 p005 idshl score 2207791 meansd total score3862 significant differences observed across age r0276 sex males 2165803 females 2247778 education 1416819 2655626 2week morbidity present 2062817 absent 2235783 p0001 health literacy highest lowest 27 score groups p005 roc curve indicated 762 respondents adequate idshl binary logistic regression analysis revealed 12 predictors idshl adequacy p005 among 22 remaining items corrected itemtotal correlation ranged 0316 0504 cronbachs values ranged 0754 0810 items deleted overall value 0839 difficulty coefficient ranged 119 408 subscale 2 statistically significant differences mean scores correctincorrect answer p0001 newly developed 28item scale provides efficient psychometrically sound userfriendly measure idshl chinese population