Table 1.

Descriptive Statistics of Three Hundred and Thirty-One Included Reports (k = 1,364)

Variable	Inter-rater reliability	Count	M (SD) or percentages
Report characteristics:
Publication year^	1.00	311	2011 (6.7)
Source type	1.00
Journal article		325	98.19%
Other		2	0.60%
Institutional area	1.00
Psychology		31	9.37%
Community/public health		97	29.31%
Medicine		110	33.23%
Epidemiology		18	5.44%
Social work		9	2.72%
Other		54	16.31%
Language of the report	1.00
English		329	99.4%
Six-month follow up	1.00
Yes		250	75.53%
No		79	23.87%
Number of participants^	1.00	327	254.80 (691.18)
Age in years^	1.00	329	29.49 (9.98)
Gender
% men^	1.00	313	54.53 (36.01)
% women^	1.00	314	45.97 (35.91)
Racial/ethnic descenta
% White American^	1.00	254	21.94 (28.60)
% African American^	1.00	264	33.44 (35.75)
% Latin American^	1.00	245	15.32 (25.51)
% Asian American^	1.00	209	5.61 (21.19)
% Native American Indian^	1.00	210	2.3 (13.72)
% High school graduates^	1.00	180	44.24 (33.98)
Self-identified sexual orientation
% heterosexual^	1.00	102	47.95 (42.7)
% Gay/bisexual or MSM^	1.00	94	53.68 (42.98)
Intention to treat	0.42
Yes		91	27.49%
No		179	54.08%
Intervention characteristics:
Sample targeted by race/ethnicity	1.00
Yes		67	20.24%
No		249	75.23%
Sample targeted by gender	1.00
Yes		127	38.37%
No		189	57.10%
Targeted sample	1.00
HIV positive*		55	16.52%
Intravenous drug user*		18	5.44%
Drug dependent*		21	6.34%
Men who have sex with men*		25	7.55%
Female sex workers*		2	0.60%
Prison inmates*		5	1.51%
Minority women*		3	0.91%
African American women*		8	2.42%
College students		8	2.42%
Middle school students		5	1.51%
Combination*		42	12.69%
Self-selected sample	1.00
Yes		278	83.99%
Nob		42	12.69%
Both		2	0.60%
Recruitment context	1.00
Hospital/health clinic		141	42.60%
Drug treatment		26	7.85%
Social service		10	3.02%
Bar		8	2.42%
Street		13	3.93%
Classroom		23	6.95%
Multiple		40	12.08%
Exposure setting	1.00
Health clinic		132	39.88%
Community		35	10.57%
Schools		19	5.74%
Mass media		2	0.60%
Multiple contexts		13	3.93%
Delivery medium	0.97
Face-to-face		239	72.21%
Software		10	3.02%
Internet		9	2.72%
Television		9	2.72%
Radio		3	0.91%
Multiple context		11	3.32%
Delivery format	1.00
Groups		107	32.33%
Individuals		136	41.09%
Both		42	12.69%
Facilitator	0.93
Doctor/nurse		43	12.99%
Public health educator		47	14.20%
Clinical psychologist		17	5.14%
Community leader		1	0.30%
Multiple		19	5.71%
Culturally appropriate	0.89
Yes		77	23.26%
No		241	72.81%
Days between intervention and post-test^	0.88	317	164.79 (185.04)
Duration of the intervention (in hours)	0.88	217	9.07 (15.79)
Ensuring high intervention fidelity	0.97
Yes		65	19.64%
No		266	80.36%
Attitudinal elements:
Attitude arguments	0.63
Yes		118	35.65%
No		114	34.44%
Threat arguments	0.45
Yes		40	12.08%
No		145	43.81%
Norm arguments	0.64
Yes		60	18.13%
No		139	41.99%
Informational arguments	0.55
Yes		243	73.41%
No		32	9.67%
Motivational elements:
Feedback	0.51
Yes		64	19.34%
No		153	46.22%
Skill training elements:
Skill training	0.69
Yes		146	44.11%
No		89	26.89%
Goal setting	0.64
Yes		66	19.94%
No		145	43.81%
Role playing	0.54
Yes		57	17.22%
No		160	48.34%

Note. M = mean, SD = standard deviation. A caret indicates variables used r = intercoder reliability for continuous variables; other variables used κ = intercoder reliability for categorical variables. An asterisk indicates the at-risk populations.

^areported for interventions conducted in North America, as these categories are not applicable to most other continents.

^bincludes captive audiences (e.g., participants recruited from a prison setting).