CHDA Practice Guide Questions With Complete Correct Answers.

Descriptive statistics - correct answer Describes the distribution of the data; used to summarize the center and shape of the distribution of a variable of interest, i.e. Mean or median or variance or standard deviation or range Inferential statistics - correct answer Involves using a sample of a population; common inferential statistic techniques include the use of confidence intervals and hypothesis testing Qualitative data - correct answer Describes observations about a subject; i.e. Patient is disoriented Nominal scale data - correct answer Type of qualitative data which has discrete categories with no inferred order; i.e. Diagnosis codes or procedure codes Ordinal scale data - correct answer Type of qualitative data which has discrete categories with a natural or inferred order; i.e. Patient satisfaction responses on a five-point scale Interval scale data - correct answer Type of quantitative data where the distance between 2 values has meaning, but multiplying values has no meaning. The value of zero has no interpretation; i.e. Temperature Ratio scale data - correct answer Type of quantitative data where zero has an interpretation and the values may be doubled or multiplied by a constant and still have meaning. I.e. Length of stay or age Discrete data - correct answer Includes a finite number of values Continuous data - correct answer Can take on fractional and whole number values CMI - correct answer Case Mix Index; average relative weight of the diagnosis-related group (DRG) assigned to a hospital's discharges; sometimes used as a proxy for the severity of patients treated by a hospital Exploratory Data Analysis - uses graphical techniques - correct answer Data Mining - uses graphical techniques and descriptive statistics ICD-10-PCS - correct answer Procedure coding system; used for hospital inpatient procedures CPT - correct answer Current Procedural Terminology; used for outpatient services; maintained by American Medical Association HCPCS - correct answer Healthcare Common Procedure Coding System; maintained by CMS; supplements CPT; 5 digits starting with alpha character HCPCS J codes - correct answer Used to code drugs on physician and hospital outpatient claims OPPS - correct answer Outpatient Prospective Payment System; uses grouping methodology called ambulatory payment classification groups (APCs) to group hospital outpatient services that use similar amounts and types of resources; APCs aren't coded; they are computed based on the CPT or HCPCS codes assigned to the outpatient case NDCs - correct answer National Drug Codes; indicate size of package, dosage formulation of the drug, the drug name (generic vs brand name), and manufacturer. 11 digit code; digits 1-5 describe the manufacturer, 6-9 describe drug name, 10 and 11 describe package size and type. Therapeutic Classification grouping system - correct answer Developed by American Hospital Formulary Service (AHFS); uses 6 digit numbers, that are 3 groups of 2 digits separated by colons. RxNorm - correct answer Produced by National Library of Medicine (NLM). Revenue codes - correct answer Recorded on hospital facility claims to assign services and charges to departments; 4-digit number on UB04 claim or in the 837I electronic file associated with the claim. Place of service codes - correct answer Used on physician claims to describe where a CPT or HCPCS service has been performed Claims processing codes - correct answer i.e. Medicare Code Editor (MCE) and Outpatient Code Editor (OCE) codes are found on remittance advices to describe claims processing errors on hospital claims. ResDAC - correct answer Research Data Assistance Center; CMS contractor that provides assistance to researchers and other entities that wish to access Medicare or Medicaid data. RVU - correct answer Relative value units; assigned to CPT and HCPCS codes to determine the Medicare fee schedule pymt. Entity Relationship diagram - correct answer Describes how tables work together Null hypothesis - correct answer Status quo Type I error - correct answer Made when the null hypothesis is rejected when it is actually true Type II error - correct answer Made when the null hypothesis is not rejected when it is actually false Categorical variables - correct answer Qualitative data