Directions: For each of the following research article excerpts, (1) decide whether the sampling method presented is either a probability or nonprobability sampling method; (2) identify the specific sampling method used, which might include convenience, quota, purposive, network, or theoretical sampling for nonprobability samples or simple random, stratified random, cluster, or systematic sampling for probability samples; and (3) provide a rationale for the sampling method you selected. Some of the examples might include more than one sampling method to obtain the study sample 8. Study excerpt: “All patients were referred by their GP [General Practitioner] to the researcher (L.T.) who, after obtaining informed consent and taking baseline data, randomized the patients” into the experimental group receiving acupuncture and the comparison group receiving standard care. MacPherson, H., Thorpe, L., Thomas, K., & Campbell, M. (2003). Acupuncture for low back pain: Traditional diagnosis and treatment of 148 patients in a clinical trial. Complementary Therapies in Medicine, 12 (1), 38–44. Excerpt from page 39. 9. Study excerpt: “Potential participants were recruited from youths seeking health and social services from a street outreach program … This age group represented the majority of youths seeking services from this program… Saturation (sufficient or adequate data had been collected to meet the goal of the study [to develop a theory]) was reached at the end of 12 interviews; three additional participants were recruited to verify the findings.” Rew, L. (2003). A theory of taking care of oneself grounded in experiences of homeless youth. Nursing Research, 52 (4), 234–41. Excerpt from page 235. 10. Study excerpt: “This study recruited a … sample of HIV-positive participants from an Internet Website sponsored by the University of California, San Francisco… as well as HIV- positive patients from five geographic data collection clinical sites located in Boston, MA; New York, NY; Oslo, Norway; Paterson, NJ; and the San Francisco Bay Area from July 1999 to February 2000” and invited them to participate in the study. Chou, F. Y., Holzemer, W. L., Portillo, C. J., & Slaughter, R. (2004). Self-care strategies and sources of information for HIV/AIDS symptom management. Nursing Research, 53 (5), 332–9. Excerpt from page 333. Solution 8. probability sampling method simple random 9. probability sampling method systematic sampling 10. nonprobability sampling method convenience sample.

1. Directions: For each of the following research article excerpts, (1) decide whether the sampling
method presented is either a probability or nonprobability sampling method; (2) identify the
specific sampling method used, which might include convenience, quota, purposive, network, or
theoretical sampling for nonprobability samples or simple random, stratified random, cluster, or
systematic sampling for probability samples; and (3) provide a rationale for the sampling method
you selected. Some of the examples might include more than one sampling method to obtain the
study sample
8. Study excerpt: “All patients were referred by their GP [General Practitioner] to the researcher
(L.T.) who, after obtaining informed consent and taking baseline data, randomized the patients”
into the experimental group receiving acupuncture and the comparison group receiving standard
care. MacPherson, H., Thorpe, L., Thomas, K., & Campbell, M. (2003). Acupuncture for low
back pain: Traditional diagnosis and treatment of 148 patients in a clinical trial. Complementary
Therapies in Medicine, 12 (1), 38–44. Excerpt from page 39.
9. Study excerpt: “Potential participants were recruited from youths seeking health and social
services from a street outreach program … This age group represented the majority of youths
seeking services from this program… Saturation (sufficient or adequate data had been collected
to meet the goal of the study [to develop a theory]) was reached at the end of 12 interviews; three
additional participants were recruited to verify the findings.” Rew, L. (2003). A theory of taking
care of oneself grounded in experiences of homeless youth. Nursing Research, 52 (4), 234–41.
Excerpt from page 235.
10. Study excerpt: “This study recruited a … sample of HIV-positive participants from an
Internet Website sponsored by the University of California, San Francisco… as well as HIV-
positive patients from five geographic data collection clinical sites located in Boston, MA; New
York, NY; Oslo, Norway; Paterson, NJ; and the San Francisco Bay Area from July 1999 to
February 2000” and invited them to participate in the study. Chou, F. Y., Holzemer, W. L.,
Portillo, C. J., & Slaughter, R. (2004). Self-care strategies and sources of information for
HIV/AIDS symptom management. Nursing Research, 53 (5), 332–9. Excerpt from page 333.
Solution
8.
probability sampling method
simple random
9.
probability sampling method

2. systematic sampling
10.
nonprobability sampling method
convenience sample