CHDA Test Review Book Terms Actual Questions And Detailed Answers Graded A+.
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CHDA
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CHDA
Alpha level - correct answer The level of Type I error that is deemed acceptable based on context in statistical hypothesis testing. See Type I error.
Alternative hypothesis - correct answer The complem...
CHDA Test Review Book Terms
Alpha level - correct answer The level of Type I error that is deemed acceptable based on context in statistical hypothesis testing. See Type I error.
Alternative hypothesis - correct answer The complement of the null hypothesis that is to be tested using the appropriate statistical test. This hypothesis typically requires some action to be taken.
Ambulatory payment classification (APC) - correct answer The payment unit used in the hospital outpatient prospective payment system (OPPS). The classification is a resource-
based reimbursement system.
Analysis of variance - correct answer The statistical tool used to compare more than two population means. The null hypothesis tests that all of the population means are equal.
Analysis - correct answer Reviewing and summarizing data for use in decision making.
Analytic study - correct answer A study where the analyst is able to investigate
the relationship between variables.
Auditing - correct answer The performance of internal and external reviews to
identify variations from established baselines (for example, review of outpatient coding as compared with CMS outpatient coding guidelines).
Average daily inpatient census - correct answer An amount representing the inpatient service days for a period divided by the number of days in a period.
Balanced design - correct answer An experimental design where the number of subjects in each sample are the same for all populations sampled. The term is relevant when performing an analysis of variance or a two sample t-test. Bell curve - correct answer The shape of the normal distribution. The bell peaks at the average and slopes down on both sides symmetrically.
Binomial variable - correct answer A variable that takes only two values (such as yes or no; alive or dead). The probability of a yes or no is constant across all of the subjects, and the outcome of each subject is independent of the others.
Case-control study - correct answer A study where the analyst-selected cases are those units of analysis with the attribute to be studied and the controls are those without the attribute.
Case Mix Index (CMI) - correct answer The average relative weight of all cases treated at a given facility or by a given physician, which reflects the resource intensity or clinical severity of a specific group in relation to the other groups in the classification system; calculated by dividing the sum of the weights of diagnosis-related groups for patients discharged during a given period by the total
number of patients discharged.\
Centers for Medicare and Medicaid Services (CMS) - correct answer The division of the Department of Health and Human Services that is responsible for developing healthcare policy in the United States, for administering the Medicare program and the federal portion of the Medicaid program, and maintaining the procedure portion of the International Classification of Diseases,
ninth revision, Clinical Modification (ICD-9-CM) and International Classification of Diseases, tenth revision, Procedure Coding System (ICD-10-PCS); called the Health Care Financing Administration (HCFA) prior to 2001.
Cesarean section rate - correct answer The number of cesarean sections (or C-
sections) performed during the period of study, divided by the total number of deliveries (including C-
sections) for the same period.
Chi squared test - correct answer A statistical test that is used to test for relationships between categorical variables. The null hypothesis for this test is that there is no association between the two variables.
Cluster random sampling - correct answer The population is divided into groups before the sample is selected. The groups or clusters must be mutually exclusive and exhaustive. (That is, every unit in the population is assigned to one and only one cluster.) Clusters are then randomly
selected to make up the sample. Cluster sampling may be performed as single-stage or two-stage.
CMS-1500 - correct answer 1. The universal insurance claim form developed and approved by the American Medical Association (AMA) and the Centers for Medicare and Medicaid Services (CMS) that physicians use to bill Medicare, Medicaid, and private insurers for professional services provided 2. A Medicare claim form used to bill third-party payers for provider services, for example, physician office visits.
Coefficient of determination - correct answer A statistic that measures the amount of variance in a dependent variable explained by one or more independent variables. If there is one independent variable, then this value is the Pearson Correlation Coefficient squared.
Cohort study - correct answer A study where the subjects with an attribute are
matched with those without the attribute based on demographics, but the subjects are followed over time.
Confidence interval - correct answer An interval that is centered at the sample
estimate of a population value that may be calculated so that it has a preset probability of containing the population value.
Confidence level - correct answer The probability that a confidence interval includes the true value of a population statistic.
Construct validity - correct answer A type of validity that is typically measured for survey and assessment tools, using instruments designed to measure the constructs or concepts of satisfaction with a provider's performance.
Content validity - correct answer A type of validity that formally assesses whether or not all components of the metric are necessary to measure the quality.
Contingency tables - correct answer A useful method for displaying the relationship between two categorical variables. Each category is displayed as rows or columns. The cells in the table represent the count of subjects with each category attribute.
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