An advantage of using longitudinal studies is that A. they are relatively inexpensive
B. they take little time to conduct
C. they generally have small amounts of data
D. subject variation is often reduced

While gloving prior to beginning an arthroscopic procedure, the surgeon questions the necessity for double-gloving. which of the following are the most appropriate reasons to double-glove? 1. the barrier efficacy of latex decreases over time. 2. latex has a lattice-like structure that can lead to fluid passage. 3. minimally invasive procedures increase the risk of infection. 4. double-gloving adds protection from infection due to puncture injuries. a. 1,2, and 3 only b. 1,2, and 4 only c. 1,3, and 4 only d. 2,3, and 4 only