Effects of a spousal participation health promotion program for middle-aged and old men who have undergone percutaneous coronary intervention based on Cox's Interaction Model: A quasi-experimental study with nonequivalent control group pre- and post-test design.

Purpose: To examine the effects of a spousal participation health promotion program (health promotion program, HPP) based on Cox's Interaction Model of supporting husbands' health behavior compliance following a percutaneous coronary intervention (PCI). Methods: This study was a nonequivalent control group pretest-posttest design. A total of 52 participants (26 in each group) completed the study. The researchers conducted pretest and posttest at 12-week intervals on 26 control groups. Those in the 26 experimental groups attended in the entire 12-week program with pretest and posttest. Also, 10 control groups who wished to receive the intervention were given the opportunity to participate in the HPP for 3 weeks and were provided with the materials used from weeks 4 through 12 after completion of the study. Descriptive statistics, independent t-test, paired t-test, Mann-Whitney U-test, and a Wilcoxon signed rank test were conducted. Results: Spousal participation HPP was effective in promoting participants' marital compatibility and health behavior compliance. Conclusion: Spousal participation HPP was an effective intervention for reducing body mass index, total cholesterol, triglyceride, and low-density lipoprotein, enhancing marital harmony, and promoting health behavior compliance among middle-aged and older men who underwent PCI. Therefore, it is recommended to actively utilize the spousal participation HPP as an effective intervention strategy for health management of this population.