Convenience sampling produces a biased sample that is basically a collection of anecdotes that cannot be applied generally to larger populations.
Convenience sampling is also known as:

Healthcare organizations' ability to deliver high-quality, patient-centered care to their members and patients depends in part on their understanding of basic customer service principles and their ability to integrate these principles into clinical settings. Healthcare organizations should pay attention to customer service for several reasons.
Which of the following is NOT out of t hose reasons?

Overproduction
Inventory
Repairs/rejects
Motion
Processing
Waiting
Transport
These are the types of _____________ identified by Taiichi Ohno.

The test-retest reliability coefficient is a method to measure instrument reliability.
This method measures the degree of correspondence between:

Patients hospitalized for congestive heart failure should be able to walk farther, have more energy, and experience
less shortness of breath following hospital treatment. Patients who undergo total knee replacements should have less
knee pain when they talk; have a good range of joint motion; and be able to perform activities of daily living such as
walking, doing yard work, and performing normal household chores. This example shows that: