A Certain HMO Is Attempting to Show the Benefits of Managed

question 54

Multiple Choice

A certain HMO is attempting to show the benefits of managed health care to an insurance company. The HMO believes that certain types of doctors are more cost-effective than others. One theory is that primary specialty is an important factor in measuring the cost-effectiveness of physicians. To investigate this, the HMO obtained independent random samples of 20 HMO physicians from each of four primary specialties-General Practice (GP) , Internal Medicine (IM) , pediatrics (PED) , and Family Physician (FP) - and recorded the total per-member, per-month charges for each. In order to compare the mean charges for the four specialty groups, the data were be subjected to a one-way analysis of variance. The results of the Tukey analysis are summarized below.
$$\begin{array} { l c } \text { Group } & \text { Sample Mean } \\\hline \text { IM } & 55.9 \\\text { GP } & 41.4 \\\text { FP } & 40.00 \\\text { PED } & 21.50\end{array}$$ Which primary specialties have significantly lower mean charges than Internal Medicine (IM) ?

• A) PED and FP
• B) PED
• C) PED, FP, and GP
• D) none

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Definitions:

Telecommunication Cables

Cables used for transmitting information via electrical signals or light pulses over distances.

Phase Conductors

The wires or cables in an electrical system that carry the alternating current between the source and the load, in one or more phases.

Neutral Conductor

A conductor that carries current back to the source in electrical systems and is at a potential of zero volts.

Sequence

An ordered collection of objects or events that follow a specific pattern or arrangement.