. Author manuscript; available in PMC: 2014 Sep 1.

Published in final edited form as: Contemp Clin Trials. 2013 Jun 10;36(1):61–67. doi: 10.1016/j.cct.2013.05.014

Table 3.

Type of Research Conducted by Each Cluster Group. Numbers in the “Cluster Groups” columns indicate the percent of researchers in each group who are involved with the different types of research.

Type of Research	Cluster Groups				χ²	p	Cramer’s V
Type of Research	N	Limited	Moderate	Comprehensive	χ²	p	Cramer’s V
Behavioral & Epidemiologic	104
Studies		33%	46%	45%	3.38	0.185	0.116
Clinical Trials	75	19%	36%	34%	5.92	0.052	0.154
Evaluation Research	43	16%	13%	21%	1.91	0.385	0.088
Health Outcomes Research	35	7%	21%	14%	6.22	0.045	0.158
Health Services Research	36	15%	16%	13%	0.30	0.859	0.035
Intervention Research	51	11%	24%	25%	5.80	0.055	0.153
Observational Studies	29	8%	16%	11%	2.14	0.343	0.093
Other	42	26%	12%	14%	6.32	0.042	0.159