Relation of Statistically Significant, Abnormal, and Typical WAIS-R VIQ-PIQ Discrepancies to Full Scale IQs

2000 ◽  
Vol 16 (2) ◽  
pp. 107-114 ◽  
Author(s):  
Louis M. Hsu ◽  
Judy Hayman ◽  
Judith Koch ◽  
Debbie Mandell
Keyword(s):  
Graphical Method ◽  
The United States ◽  
Full Scale ◽  
True Score ◽  
Absolute Value ◽  
Normative Population ◽  
The Us ◽  
The Mean ◽  
And Performance ◽  
Quadratic Models

Summary: In the United States' normative population for the WAIS-R, differences (Ds) between persons' verbal and performance IQs (VIQs and PIQs) tend to increase with an increase in full scale IQs (FSIQs). This suggests that norm-referenced interpretations of Ds should take FSIQs into account. Two new graphs are presented to facilitate this type of interpretation. One of these graphs estimates the mean of absolute values of D (called typical D) at each FSIQ level of the US normative population. The other graph estimates the absolute value of D that is exceeded only 5% of the time (called abnormal D) at each FSIQ level of this population. A graph for the identification of conventional “statistically significant Ds” (also called “reliable Ds”) is also presented. A reliable D is defined in the context of classical true score theory as an absolute D that is unlikely (p < .05) to be exceeded by a person whose true VIQ and PIQ are equal. As conventionally defined reliable Ds do not depend on the FSIQ. The graphs of typical and abnormal Ds are based on quadratic models of the relation of sizes of Ds to FSIQs. These models are generalizations of models described in Hsu (1996) . The new graphical method of identifying Abnormal Ds is compared to the conventional Payne-Jones method of identifying these Ds. Implications of the three juxtaposed graphs for the interpretation of VIQ-PIQ differences are discussed.

A Modification of the Payne-Jones Method of Identifying Abnormal Differences in WISC-R Performance and Verbal IQ's

1996 ◽  
Vol 12 (1) ◽  
pp. 27-32 ◽  
Author(s):  
Louis M. Hsu
Keyword(s):  
Full Scale ◽  
True Score ◽  
Verbal Iq ◽  
Score Difference ◽  
The Difference ◽  
And Performance

The difference (D) between a person's Verbal IQ (VIQ) and Performance IQ (PIQ) has for some time been considered clinically meaningful ( Kaufman, 1976 , 1979 ; Matarazzo, 1990 , 1991 ; Matarazzo & Herman, 1985 ; Sattler, 1982 ; Wechsler, 1984 ). Particularly useful is information about the degree to which a difference (D) between scores is “abnormal” (i.e., deviant in a standardization group) as opposed to simply “reliable” (i.e., indicative of a true score difference) ( Mittenberg, Thompson, & Schwartz, 1991 ; Silverstein, 1981 ; Payne & Jones, 1957 ). Payne and Jones (1957) proposed a formula to identify “abnormal” differences, which has been used extensively in the literature, and which has generally yielded good approximations to empirically determined “abnormal” differences ( Silverstein, 1985 ; Matarazzo & Herman, 1985 ). However applications of this formula have not taken into account the dependence (demonstrated by Kaufman, 1976 , 1979 , and Matarazzo & Herman, 1985 ) of Ds on Full Scale IQs (FSIQs). This has led to overestimation of “abnormality” of Ds of high FSIQ children, and underestimation of “abnormality” of Ds of low FSIQ children. This article presents a formula for identification of abnormal WISC-R Ds, which overcomes these problems, by explicitly taking into account the dependence of Ds on FSIQs.

Trajectories of Injectable Cancer Drug Costs After Launch in the United States

2018 ◽  
Vol 36 (4) ◽  
pp. 319-325 ◽  
Author(s):  
Noa Gordon ◽  
Salomon M. Stemmer ◽  
Dan Greenberg ◽  
Daniel A. Goldstein
Keyword(s):  
Drug Administration ◽  
Food And Drug Administration ◽  
The United States ◽  
Drug Costs ◽  
Cancer Drug ◽  
Steady Increase ◽  
Drug Prices ◽  
The Us ◽  
The Mean ◽  
Over Time

Purpose Cancer drug prices at launch have increased in recent years. It is unclear how individual drug prices change over time after launch and what market determinants influence these changes. We measured the price trajectories of a cohort of cancer drugs after their launch into the US market and assessed the influence of market structure on price changes. Methods We studied the changes in mean monthly costs for a cohort of 24 patented, injectable anticancer drugs that were approved by the US Food and Drug Administration between 1996 and 2012. To account for discounts and rebates, we used the average sales prices published by the Centers for Medicare and Medicaid Services. Costs were adjusted to US general and health-related inflation rates. For each drug, we calculated the cumulative and annual drug cost changes. We then used a multivariable regression model to evaluate the association between market and cost changes over time. Results With a mean follow-up period of 8 years, the mean percent change in cost for all drugs was +25% (range, −14% to +96%). After adjusting for inflation, the mean cost change was +18% (range, −16% to +59%). Rituximab and trastuzumab followed a similar pattern in cost increases over time, and the inflation-adjusted monthly costs rose since approval by 49% and 44%, respectively. New supplemental US Food and Drug Administration approvals, new off-label indications, and new competitors did not influence the annual cost change rates. Conclusion Anticancer drug costs may change substantially after launch. Regardless of competition or supplemental indications, there is a steady increase in costs of patented anticancer agents over time. New regulations may be needed to prevent additional increases in drug costs after launch.

The intelligence of six-year-olds in Hong Kong

1989 ◽  
Vol 21 (4) ◽  
pp. 461-464 ◽  
Author(s):  
Jimmy Chan ◽  
Richard Lynn
Keyword(s):  
United States ◽  
Hong Kong ◽  
Ethnic Minorities ◽  
The United States ◽  
Chinese Children ◽  
Pacific Basin ◽  
The Pacific ◽  
The Us ◽  
The Mean ◽  
The Uk

SummaryEvidence has accumulated to suggest that the mean IQs of Orientals in the United States and in the countries of the Pacific Basin are higher than those of Whites (Caucasoids) in the United States and Britain. This paper presents evidence from IQ tests on 4858 6-year-old Chinese children in Hong Kong. On the Coloured Progressive Matrices these children obtained a mean IQ of 116. Samples from Australia, Czechoslovakia, Germany, Romania, the UK and the US obtain IQs in the range 95–102. It is suggested that these results pose difficulties for the environmentalist explanations commonly advanced to explain the low mean IQs obtained by some ethnic minorities in the United States.

SEX DIFFERENCES ON THE WISC-III AMONG CHILDREN IN SUDAN AND THE UNITED STATES

2016 ◽  
Vol 49 (6) ◽  
pp. 792-797
Author(s):  
Salaheldin F. Bakhiet ◽  
Ismael S. Albursan ◽  
Mohammad F. Al Qudah ◽  
Adel S. Abduljabbar ◽  
Suliman S. Aljomaa ◽  
...  
Keyword(s):  
United States ◽  
Sex Differences ◽  
The United States ◽  
Full Scale ◽  
Two Samples ◽  
And Performance

SummaryThe sex differences on the WISC-III are reported for the thirteen subtests, the Verbal and Performance IQs, the four Index IQs and the Full Scale IQs in Sudan and the United States. The sex differences are closely similar in the two samples with a correlation of 0.878 (p<0.001) for the thirteen subtests. Males obtained significantly higher Full Scale IQs in the two samples of 0.23d and 0.11d, respectively.

scholarly journals Obesity trends in populations of the Russian Federation and the United States of America. Thirty-year long dynamics

2018 ◽  
Vol 17 (4) ◽  
pp. 67-73 ◽  
Author(s):  
V. G. Vilkov ◽  
S. A. Shalnova ◽  
A. D. Deev ◽  
Yu. A. Balanova ◽  
S. E. Efstifeeva ◽  
...  
Keyword(s):  
Russian Federation ◽  
Age Groups ◽  
The United States ◽  
Men And Women ◽  
The Us ◽  
Obesity Trends ◽  
Prevalence Of Obesity ◽  
The Mean ◽  
And Gender ◽  
Gender Categories

Aim. To evaluate the dynamics of obesity and mean body mass index (BMI) in Russia and USA in various age and gender categories during 1975-2014.Material and methods. By a repeat analysis of one-moment studies of Russian and US population in 1975-1982 and 2007-2014, the values of obesity and BMI were assessed in men and women age 25-64 y. o. Into analysis, the data was included from Russian part of the Lipid Clinics study and multicenter ESSE-RF study (Epidemiology of cardiovascular diseases and risk factors in various regions of Russian Federation). American data acquired from the studies NHANES (National Health And Nutrition Examination Survey), open access. Total number of observations 48974.Results. In the 80s of XX century in all age groups of women the mean BMI levels were lower in USA comparing to Russia, in men there were no significant differences. For the following 30 years in Russia the situation improved for men and women <45 y. o. — differences with USA changed modality, and currently BMI in Russia is lower than in USA.Conclusion. Russia was below the US 30 years ago by the mean BMI in females of all ages, with no differences for males. For the following 30 years in the US there was significant increase of BMI in all age strata of men and women, and in Russia dynamics was the same, but lesser. Comparison of the prevalence of obesity in men 30 years ago showed some predominance of obesity in American males, especially young, but not statistically significant. Russian women had higher prevalence of obesity regardless of age. Currently, obesity in young age is more prevalent in men and women of USA, and >45 years old — in Russia.

Capabilities of global high-level isolation units: A pre-workshop survey

2021 ◽  
pp. 1-7
Author(s):  
Jocelyn J. Herstein ◽  
Timo Wolf ◽  
Emanuele Nicastri ◽  
Yee Sin Leo ◽  
Poh Lian Lim ◽  
...  
Keyword(s):  
The United States ◽  
Infection Prevention And Control ◽  
Electronic Survey ◽  
Physical Infrastructure ◽  
The Us ◽  
Control Procedures ◽  
The Mean ◽  
High Level ◽  
Staffing And Training ◽  
And Control

Abstract Objective: To assess experience, physical infrastructure, and capabilities of high-level isolation units (HLIUs) planning to participate in a 2018 global HLIU workshop hosted by the US National Emerging Special Pathogens Training and Education Center (NETEC). Design: An electronic survey elicited information on general HLIU organization, operating costs, staffing models, and infection control protocols of select global units. Setting and participants: The survey was distributed to site representatives of 22 HLIUs located in the United States, Europe, and Asia; 19 (86%) responded. Methods: Data were coded and analyzed using descriptive statistics. Results: The mean annual reported budget for the 19 responding units was US$484,615. Most (89%) had treated a suspected or confirmed case of a high-consequence infectious disease. Reported composition of trained teams included a broad range of clinical and nonclinical roles. The mean number of HLIU beds was 6.37 (median, 4; range, 2–20) for adults and 4.23 (median, 2; range, 1–10) for children; however, capacity was dependent on pathogen. Conclusions: Responding HLIUs represent some of the most experienced HLIUs in the world. Variation in reported unit infrastructure, capabilities, and procedures demonstrate the variety of HLIU approaches. A number of technical questions unique to HLIUs remain unanswered related to physical design, infection prevention and control procedures, and staffing and training. These key areas represent potential focal points for future evidence and practice guidelines. These data are important considerations for hospitals considering the design and development of HLIUs, and there is a need for continued global HLIU collaboration to define best practices.

Abstract 248: National Trends in Utilization and Economic Outcomes of Catheter Ablation for Atrial Fibrillation in the United States 2003-2008

2014 ◽  
Vol 7 (suppl_1) ◽  
Author(s):  
Anant Mandawat ◽  
Aditya Mandawat ◽  
Rama Mandawat ◽  
Mahendra Mandawat
Keyword(s):  
Atrial Fibrillation ◽  
Catheter Ablation ◽  
Clinical Outcomes ◽  
The United States ◽  
Economic Outcomes ◽  
Future Research ◽  
The Us ◽  
Comorbidity Index ◽  
The Mean ◽  
National Trends

Introduction: Data on the utilization and economic outcomes of catheter ablation in atrial fibrillation (AF) is scarce, limiting the ability to make informed policy decisions. Hypothesis: We hypothesized that the number of catheter ablations for AF increased while length of stay and charges decreased. Methods: Patients > 18 years undergoing catheter ablation for AF were selected in the 2003-2008 HCUP-Nationwide Inpatient Sample, the largest all-payor inpatient database in the US. Patient demographic and clinical variables, including a Charlson comorbidity index, as well as hospital characteristics were analyzed. We calculated trends in rates of utilization, economic (mean LOS and total inflation-adjusted charges) and clinical (in-hospital mortality and in-hospital complications, defined using ICD-9 codes) outcomes using χ 2 , Mantel-Haenszel tests, and analysis of variance (ANOVA). Results: There were 40,145 admissions for catheter ablation for AF (mean age 60.01 years (SD 11.74; Range 18-98). The number of ablations increased by nearly 300% between 2003 and 2008 (Table). A comparison of use rates between 2003-2005 (early) vs 2006-2008 (late) showed a higher utilization among patients aged 65-79 (27.3% vs 34.0%), those with moderate comorbidities (30.3% vs 46.3%), and medium-sized hospitals (9.8% vs 19.7%), all p<0.001. During the study period, the mean LOS decreased by 30% while inflation-adjusted charges increased by 25% (Table). There was no significant change in clinical outcomes (Table). Conclusions: The number of catheter ablations for AF has increased rapidly. Although the procedure is being applied to a broader patient population and being performed in smaller-sized hospitals, LOS has decreased and clinical outcomes are stable. Factors contributing to and strategies to limit rising charges for this expanding procedure are important areas of future research.

Financial Impact of Tumor Lysis Syndrome Among Inpatients in the United States

Blood ◽  
2014 ◽  
Vol 124 (21) ◽  
pp. 5966-5966
Author(s):  
Ranjan Pathak ◽  
Smith Giri ◽  
Madan Raj Aryal ◽  
Paras Karmacharya ◽  
Vijaya R. Bhatt ◽  
...  
Keyword(s):  
Length Of Stay ◽  
Nationwide Inpatient Sample ◽  
Tumor Lysis Syndrome ◽  
The United States ◽  
Hospital Charge ◽  
Hospital Charges ◽  
Tumor Lysis ◽  
Significant Difference ◽  
The Us ◽  
The Mean

Abstract Background With an estimated 0.1 million cases in 2014, lymphomas and acute leukemias are the leading causes of malignancies in the US. Tumor lysis syndrome (TLS) is a potentially devastating complication associated with hematologic malignancies leading to increased morbidity and mortality. Previous European studies have shown that the financial burden of TLS is high, with an estimated cost of 7,342 Euros ($10,320 US Dollars) per admission. However, there is a paucity of data on the economic impact of TLS among US inpatients. Methods We used the Nationwide Inpatient Sample database to identify hospitalized patients aged ≥18 years with a primary diagnosis of TLS (International Classification of Diseases, 9th Revision, Clinical Modification [ICD-9-CM] code 277.88) from the first year the diagnosis code was introduced (2009) to 2011. Nationwide Inpatient Sample is the largest all-payer publicly available inpatient care database in the US. It contains data from five to eight million hospital stays from about 1,000 hospitals across the country and approximates a 20% sample of all US hospitals. We calculated the mean length of stay (LOS) and mean hospital charges per TLS admission and compared them with those of overall inpatient admissions. Given that renal failure occurs in severe cases, we compared the mean LOS and hospital charge between TLS patients with and without RRT (hemodialysis or peritoneal dialysis, ICD-9-CM procedure codes 39.35 and 54.98 respectively). Data analysis was done using STATA version 13.0 (College Station, TX). Results We identified 997 admissions with TLS. Mean age was 67.5 (±3.3) with 62% males and 80.4% whites. Overall mean LOS and hospital charge for TLS during the study period was 8.02 days (SE 0.83) and $ 72,840 (SE 8,083). Both the mean LOS and hospital charge for TLS were significantly higher than overall in-patient admissions (Table 1). A total of 949 patients (95%) underwent RRT. There was no significant difference in mean LOS (9.84 days vs 7.94 days, p=0.28) and mean hospital charge ($ 88,098 vs $ 71,930, p=0.58) in patients with TLS that underwent RRT compared (95.2%, n=949) to patients that did not undergo RRT (4.8%, n=48). Conclusion Our study shows that TLS is associated with a significant economic burden, with a mean cost of $ 72,840 per TLS hospitalization. Although majority of the patients hospitalized for TLS received RRT, its use was not associated with significantly higher costs. Further studies are warranted to determine the ways of optimizing current preventive measures and to explore the drivers of increased in-hospital costs in TLS patients. Table 1 Mean LOS and Hospital Charge in TLS Admissions Compared with Overall Inpatient Admissions, 2009-2011 Year Mean LOS (days) Mean hospital charge (USD) TLS admissions Overall admissions p TLS admissions Overall admissions p 2009 13.94 4.5 0.02 104,235 30,506 0.04 2010 7.62 4.6 <0.001 69,552 32,799 <0.001 2011 7.14 4.5 <0.001 69,222 35,213 <0.001 LOS=Length of Stay; TLS=Tumor Lysis Syndrome; USD=US Dollars Disclosures No relevant conflicts of interest to declare.

scholarly journals INTERTEMPORAL PORTFOLIO ALLOCATION AND HEDGING DEMAND: AN APPLICATION TO SOUTH AFRICA

2014 ◽  
Vol 15 (4) ◽  
pp. 744-775 ◽  
Author(s):  
Esti Van Wyk De Vries ◽  
Rangan Gupta ◽  
Reneé Van Eyden
Keyword(s):  
South Africa ◽  
The United States ◽  
State Variables ◽  
Portfolio Problem ◽  
The Us ◽  
The Mean ◽  
Weil Type ◽  
The Uk ◽  
Intertemporal Hedging ◽  
Hedging Demand

This paper analyses the intertemporal hedging demand for stocks and bonds in South Africa, the United Kingdom and the United States. The analysis is done using an approximate solution method for the optimal consumption and wealth portfolio problem of an infinitely long-lived investor. Investors are assumed to have Epstein-Zin-Weil-type preferences and face asset returns described by a first-order vector autoregression in returns and state variables. The results show that the mean intertemporal hedging demands for stocks are considerably smaller in SA than in the UK or the US, whilst the mean intertemporal hedging demand for bonds are not significantly different from zero in any of the countries considered. Furthermore, it is found that stocks in the US and the UK do not present a useful hedging opportunity for an investor in SA, nor do SA stocks present a useful hedging opportunity for investors from the UK or the US.

A comparison of reciprocal progeny tests amongst Holstein-Friesian sires from Canada and the United States of America

1974 ◽  
Vol 18 (3) ◽  
pp. 223-229 ◽  
Author(s):  
C. J. M. Hinks ◽  
A. Zarnecki
Keyword(s):  
United States ◽  
The United States ◽  
West Germany ◽  
Fat Percentage ◽  
Genetic Potential ◽  
Holstein Friesian ◽  
The Us ◽  
The Usa ◽  
The Mean ◽  
Progeny Tests

SUMMARYThe test proofs of 29 Holstein-Friesian sires (12 Canadian and 17 US) with milking daughters in both Canada and the USA were compared. The mean test rating of the Canadian and US sires respectively was 125±74 kg and 265±57 kg higher in Canada than in the United States.These results were supported by others obtained in milking trials in Denmark and West Germany.The fat percentage of US Holstein progeny was higher in Canada and Europe than in the USA, suggesting that the low fat percentage of the US Holstein in its country of origin cannot be attributed simply to lack of genetic potential.It is suggested that the US Holstein be considered as a substitute for the Canadian for the improvement of milking performance in European Friesian populations.

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