The mean happiness score among Iranian nurses was found to be above average. This finding aligns with studies conducted by Gurdogan and Uslusoy and Meng et al., which also reported above-average happiness levels among nurses (
18,
19). Similarly, research conducted in Iran by Javanmardnejad et al., Khosrojerdi et al., Mousavi et al., and Vakili et al. yielded comparable results (
20-
23). In contrast, a study by Yosefi reported significantly lower happiness levels among nurses (
24). In Yosefi's study, 300 female nurses working in oncology, obstetrics and gynecology, and internal medicine wards were surveyed, whereas the present study included 220 male and female nurses from internal medicine, surgery, and intensive care units. Additionally, Yosefi employed the Munsh Questionnaire to assess happiness, while the present study utilized the Oxford Happiness Questionnaire.
There was a significant relationship between gender, work experience, income, and happiness, while factors such as age, marital status, education level, employment type, and hospital department showed no significant effect on happiness. Consistent with the present research, the study by Gurdogan et al. indicated that male nurses exhibited higher levels of happiness than their female counterparts. The higher happiness levels among male nurses in Iran may be attributed to traditional gender roles, reduced workplace discrimination, more career advancement opportunities, better access to support systems, and a healthier work-life balance (
11,
23,
25). In contrast, female nurses may experience more stress due to social pressures, increased home responsibilities, and workplace discrimination, contributing to lower levels of satisfaction and happiness. However, Meng et al. found that female nurses had higher levels of happiness (
18,
19). This discrepancy could stem from geographical differences (West Asia compared to East Asia) or the fact that Meng’s study was conducted in military hospitals. It is important to note that indicators and factors related to happiness evolve with social changes over time. If Meng’s study were replicated today, the results might align with those of the present study or the one conducted by Gurdogan two years ago.
Additionally, Baghdadi et al. conducted their study on nursing students, a population distinct from the present study (
26). Since nursing students are generally at the beginning of their professional careers, the levels of happiness and influencing factors in this group may differ from those of employed nurses. Baghdadi’s study also reported no significant relationship between gender and happiness (
26).
The results indicate that longer work experience is associated with higher levels of happiness, consistent with the findings of Khosrojerdi et al. (
21). However, studies conducted by Javadi Sharif et al. and Bagheri et al. found no significant relationship between work experience and happiness (
27,
28), which contrasts with our findings. One possible explanation for this discrepancy is that nurses with more experience may have started their careers during periods when economic, social, and working conditions were more favorable, providing them with a higher social status. These experienced nurses may now enjoy greater stability in their personal and professional lives. In contrast, less experienced nurses often face challenges such as adverse economic and social conditions, increased stress due to staffing shortages, and lower salaries. As a result, they may experience greater anxiety about the future and instability in their lives, leading to lower levels of happiness compared to their more experienced colleagues (
29).
Javanmardnejad et al., Khosrojerdi et al., and Kumar et al. also identified a significant relationship between income and happiness (
20,
21,
30), aligning with our findings. Income level is highlighted as a crucial factor in global studies as well (
31,
32). However, the concept of happiness and the factors contributing to it vary across countries and cultures. Language, geography, and culture play significant roles in shaping the definition of happiness and can influence its levels (
33). Additional factors identified in the literature that contribute to variations in the meaning of happiness include corruption, perceptions of freedom and free choice, social support (
34,
35), income inequality, economic conditions, urban versus rural residency, and health (
31,
32). Furthermore, marital status, social participation and support, and health conditions have been emphasized as significant factors (
36,
37).
The findings indicated that the mean score for caring behaviors was above average. Safa et al. reported that the majority of patients expressed satisfaction with nurses' caring behaviors (
38). Similarly, Barkhordari-Sharifabad et al., Hosseinzadeh et al., Ferede et al., Gheybi and Zeinali also found that nurses demonstrated above-average caring behaviors (
2,
17,
39,
40). However, Zare revealed a disparity: While nurses believed they were providing good care, patients felt their expectations and needs were not fully met (
4). In contrast, studies by Ahmed et al. and Kibret et al. reported low levels of caring behaviors among nurses, findings that contradict the results of this study (
41,
42).
There was a significant relationship between happiness and caregiving behavior, including all its subdomains. A study by Baghdadi et al. highlighted that happiness could influence the caregiving behavior of nursing students (
26). Similarly, Abou Zeid et al. reported comparable findings, suggesting that a positive and enhanced sense of happiness is essential for improving nurses' caregiving behaviors (
43). A positive work environment can contribute to increased happiness among nurses, motivating them to exhibit better caregiving behaviors. In general, it can be concluded that happier nurses demonstrate greater commitment to caregiving behaviors, and increased happiness enhances the quality of care provided by nurses.
5.1. Conclusions
Nurses with higher levels of happiness are more likely to provide better care. Considering the pivotal role nursing care plays in patient recovery, it is imperative for healthcare organizations and governments to prioritize initiatives aimed at enhancing nurse happiness. Offering greater financial support, promoting gender equality in the workplace, and ensuring job security to retain nurses can create a solid foundation for improving the quality of nursing care. Furthermore, since happiness is not a fixed trait and can be influenced by various factors, future research should focus on identifying additional elements that impact nurse happiness to develop targeted interventions that further enhance their well-being and caregiving effectiveness.