Internet-based health information has become increasingly important for ensuring health equity for all populations. The lack of studies reporting on Internet use among patients of public health clinics has obscured the needs of diverse patient groups. Guided by social cognitive theory, this quantitative cross-sectional study used a 30-question self-administered survey, Computer Self-Efficacy for Personal Health (CSEPH) to examine 3 urban health clinics in Northern California. Key research questions examined the extent of computer self-efficacy that patients have for searching health information online, the role of demographic factors on patients' access of health information online and their computer skills, and the impact of the patients' perceived benefits on their access to the Internet. A total of 455 men and women, ages 18 and over, took the survey in English, Spanish, or Chinese language. A Mann-Whitney U test, Pearson Chi Square test, and nonparametric correlations were applied for hypotheses testing. Key findings showed a significant difference between computer self-efficacy among the 2 groups: those who had accessed and those who had not accessed the Internet for health information (U = 6122.00, Z = 4.831, p < 0.001, r = 0.27). For demographic attributes, only education level was positively related to having accessed the Internet. Furthermore, perceived benefits of Internet-based health education were significantly related to having accessed the Internet for health information. Social implications of this study imply the imminent need for improving accessibility for computer use and trainings for public health clinic patients, and to increase benefits for Internet-based health information and communications. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com.bibliotheek.ehb.be/en-US/products/dissertations/individuals.shtml.]