Triangulation refers to the use of multiple methods or data sources in qualitative research to develop a comprehensive understanding of phenomena (Patton, 1999). Triangulation also has been viewed as a qualitative research strategy to test validity through the convergence of information from different sources. Denzin (1978) and Patton (1999) identified four types of triangulation: (a) method triangulation, (b) investigator triangulation, (c) theory triangulation, and (d) data source triangulation. The current article will present the four types of triangulation followed by a discussion of the use of focus groups (FGs) and in-depth individual (IDI) interviews as an example of data source triangulation in qualitative inquiry.

Recommendations for the future introduction of APN roles can be drawn from this paper. These include the need for a collaborative, systematic and evidence-based process designed to provide data to support the need and goals for a clearly defined APN role, support a nursing orientation to advanced practice, promote full utilization of all the role domains, create environments that support role development, and provide ongoing evaluation of these roles related to predetermined goals.

The process for implementing and evaluating APN roles is as complex and dynamic as the roles themselves. The PEPPA framework is shaped by the underlying principles and values consistent with APN, namely, a focus on addressing patient health needs through the delivery of coordinated care and collaborative relationships among health care providers and systems. Engaging environmental stakeholders as participants in the process provides opportunity to identify the need and shared goals for a clearly defined APN role. The process promotes increased understanding of APN roles and optimal use of the broad range of APN knowledge, skills, and expertise in all role domains and scope of practice. The steps for planning and implementation are designed to create environments to support APN role development and long-term integration within health care systems. The goal-directed and outcome-based process also provides the basis for prospective ongoing evaluation and improvement of both the role and delivery of health care services.

Objective To review the effectiveness of primary prevention strategies aimed at delaying sexual intercourse, improving use of birth control, and reducing incidence of unintended pregnancy in adolescents. Data sources 12 electronic bibliographic databases, 10 key journals, citations of relevant articles, and contact with authors. Study selection 26 trials described in 22 published and unpublished reports that randomised adolescents to an intervention or a control group (alternate intervention or nothing). Data extraction Two independent reviewers assessed methodological quality and abstracted data. Data synthesis The interventions did not delay initiation of sexual intercourse in young women (pooled odds ratio 1.12; 95% confidence interval 0.96 to 1.30) or young men (0.99; 0.84 to 1.16); did not improve use of birth control by young women at every intercourse (0.95; 0.69 to 1.30) or at last intercourse (1.05; 0.50 to 2.19) or by young men at every intercourse (0.90; 0.70 to 1.16) or at last intercourse (1.25; 0.99 to 1.59); and did not reduce pregnancy rates in young women (1.04; 0.78 to 1.40). Four abstinence programmes and one school based sex education programme were associated with an increase in number of pregnancies among partners of young male participants (1.54; 1.03 to 2.29). There were significantly fewer pregnancies in young women who received a multifaceted programme (0.41; 0.20 to 0.83), though baseline differences in this study favoured the intervention. Conclusions Primary prevention strategies evaluated to date do not delay the initiation of sexual intercourse, improve use of birth control among young men and women, or reduce the number of pregnancies in young women.

Volume 9November 18, 2002 Document Number 7 Purpose(1) The purpose of this paper is to construct a comprehensive framework of research dissemination and utilization that is useful for both health policy and clinical decision-making.