TABLE 1

Psychometric Properties of Preschool SDQ Determined by Previous Studies

Source (ref)nInternal Reliability of SDQ SubscalesZero-Order Correlations Between SDQ Subscales and Int/Ext Subscales of the CBCLConcurrent Criterion Validity
CONHYPEMOPEERPROCONHYPEMOPEERPROTDS
Theunissen et al (15)839α = 0.64α = 0.74α = 0.54α = 0.50α = 0.650.42/0.640.34/0.640.45/0.250.35/0.22−0.28/−0.38ROC = 0.94 (CI = −0.91 to −0.97)
Ezpeleta et al (16)1341ω = 0.72ω = 0.82ω = 0.78ω = 0.70ω = 0.670.25/0.520.22/0.510.48/0.230.36/0.19−0.17/−0.30ROC = 0.74 (CI = 0.69 to 0.79)
Klein et al (17)a1738α = 0.58α = 0.79α = 0.61α = 0.61α = 0.63NANANANANANA
Doi et al (18)754α = 0.62α = 0.66α = 0.61α = 0.45α = 0.70NANANANANANA
  • CI, 95% confidence interval; CON, conduct problems; EMO, emotional problems; Ext, externalizing; HYP, hyperactivity; Int, internalizing; NA, not assessed in this study; PEER, peer problems; PRO, prosocial; ROC, area under the receiver operating characteristic curve; TDS, total difficulties score (ie, sum of CON, HYP, EMO, and PEER subscales); α, Cronbach’s α coefficient; ω, ω coefficient.

  • a This study used the standard version of the SDQ with a preschool population.