Concurrent Validity of the Child Behavior Checklist DSM-Oriented Scales: Correspondence with DSM Diagnoses and Comparison to Syndrome Scales

This study used receiver operating characteristic (ROC) methodology and discriminative analyses to examine the correspondence of the Child Behavior Checklist (CBCL) rationally-derived DSM-oriented scales and empirically-derived syndrome scales with clinical diagnoses in a clinic-referred sample of children and adolescents (N = 476). Although results demonstrated that the CBCL Anxiety, Affective, Attention Deficit/Hyperactivity, Oppositional and Conduct Problems DSM-oriented scales corresponded significantly with related clinical diagnoses derived from parent-based structured interviews, these DSM-oriented scales did not evidence significantly greater correspondence with clinical diagnoses than the syndrome scales in all cases but one. The DSM-oriented Anxiety Problems scale was the only scale that evidenced significantly greater correspondence with diagnoses above its syndrome scale counterpart —the Anxious/Depressed scale. The recently developed and rationally-derived DSM-oriented scales thus generally do not add incremental clinical utility above that already afforded by the syndrome scales with respect to corresponding with diagnoses. Implications of these findings are discussed

Calibrating fault seal using a hydrocarbon migration model of the Oseberg Syd area, Viking Graben

It is widely acknowledged that fault rock capillary properties are important in controlling the distribution of hydrocarbons in sedimentary basins, and methods exist for predicting the capillary seal capacity of prospect bounding faults. However, fault seal capacity is rarely incorporated into models of hydrocarbon migration. This paper presents the results of migration modelling of the Oseberg Syd area of the Viking Graben incorporating fault rock capillary properties. Seal capacity is calculated in the model as a function of Shale Gouge Ratio (SGR), i.e. the percentage shale in the sequence moved past a point on a fault. Over 3 000 model realisations were run for different SGR to fault seal capacity relationships and the calculated hydrocarbon distributions were compared with known distributions. Realisations were ranked according to the closeness of fit between model and actual oil-water contacts for 7 traps. The best-fit to all 7 traps was provided by realisations with significant seal capacity at SGR values greater than ca. 0.2; a value which is in agreement with an independently derived fault-by-fault calibration between SGR and seal capacity. The level of fill calculated for an individual trap is extremely sensitive to minor changes in the seal capacity relationship because it is controlled not only by the seal capacities of the faults that bound the trap, but also by the pattern of fill-spill of upstream traps. This sensitivity to minor changes in seal capacity introduces large uncertainties when fault seal capacity relationships are used in a predictive mode and emphasises the requirement for migration modelling in fault seal prospect evaluation.Not applicabl

Diagnostic efficiency of the CASI-4 ADHD subscales in the LAMS studY:a ROC analysis

Objectives: We tested the diagnostic efficiency of the DSM-oriented Child and Adolescent Symptom Inventory (CASI-4) ADHD symptom subscales for screening ADHD Combined, Hyperactive-impulsive and Inattentive subtype in a pediatric outpatient sample. Methods: Participants were 707 first-time utilizer at nine outpatient mental health clinics aged 6.0-12.9 years (M = 9.36, SD = 1.90) who completed the baseline Longitudinal Assessment of Manic Symptoms study assessments. Consensus diagnoses were based on KSADS interviews of both youth and caregivers. Caregivers completed the CASI-4 ADHD subscales Inattention, Hyperactivity and Combined as predictors. To maximize clinical utility we report diagnostic likelihood ratios (DLRs). Results: Using receiver operating characteristic analysis, the Area under the Curve (AUC) for the Combined subscale was .79 (95 % CI .78 - .81) for screening ADHD-Combined. CASI-4 Hyperactivity subscale AUCs for screening ADHD-Hyperactive-impulsive and ADHD-Combined were .70 (95 % CI .66 - .76) and .82 (95 % CI .80- .84) respectively. CASI-4 Inattentive subscales AUCs for screening ADHD-Inattentive and ADHD-Combined were .77 (95 % CI .74 - .79) and .71 (95 % CI .69 - .73). ROC curve tests comparisons will be provided. A cut score of 40 + was identified as the optimal threshold (DLR of 3.7) for screening ADHD-Combined with the CASI-4 Combined in children ages 6-13 seen in outpatient settings. Conclusions: CASI-4 ADHD subscales are clinically useful to screen for ADHD symptoms in children because of their brevity and economy. However, clinicians should be cautious when interpreting results and should include other data to reach an accurate diagnosis