3. Results
Before conducting the main analysis, descriptive parameters for all study variables were examined. The characteristics of the sample are shown in more detail in
Table 1.
The descriptive statistics for the main study variables are shown in
Table 2 (three sources of social support, AE and LS).
The index scores for support and LS measures are high, compared to the average AE (M = 3.04), which can be described as moderate. After the analysis of descriptive parameters, a correlational matrix was made for all the main study variables. The correlation matrix is shown in
Table 3.
There is a significant, positive relationship between all the main study variables. Correlations are highest for the MSPSS subscales (0.62–0.79). The three sources of social support are all positively related to both AE and LS, but the correlations are somewhat higher for LS.
A hierarchical multiple regression was performed to examine the possible predictors of AE and LS. The main assumptions for regression analysis, including the ratio of cases to independent variables, the absence of outliers, the absence of multicollinearity and singularity, the normality, linearity, and homoscedasticity of residuals, and the independence of errors, were satisfied (
Tabachnick et al., 2013).
Two models were performed, one for AE and one for LS. Step one in both models included control (demographic) variables, namely age, gender (0—male, 1—female), year of study (1—first year, …, 5—fifth year of studying/second year at master’s level), and employment status (0—unemployed, 1—employed).
Since the group of students who were employed outside the medical field was small (N = 49), those students were added to the group that is employed in their study field. Step two included three social support subscales (family, significant other, friends).
In model 1 (
Table 4), the demographic variables significantly predict AE in the first step (F
(4,358) = 7.53,
p < 0.001). Moreover, older age and employment are related to higher AE in the first step. Adding three sources of social support significantly increased the explained variance (F
(3,355) = 11.87, ΔR
2 = 8.4%,
p < 0.001). Age was still a significant predictor of AE, but employment was not. Family support was the only significant predictor of AE among the social support variables, with higher support from family being associated with higher AE. Overall, seven predictor variables explained only 15% of the variance in AE.
In model 2, the same set of predictors in two steps was used to explain students’ LS (
Table 5).
In model 2, demographic variables significantly predicted LS in the first step (F(3,358) = 3.33, p < 0.05). Older age and unemployment were related to higher LS. Adding three sources of social support significantly increased the explained variance (F(3,355) = 36.75, ΔR2 = 22.8%, p < 0.001). Age and unemployment remained significant predictors of LS. Family support was the only significant predictor of LS among the social support variables, with higher support from family being associated with higher LS. Overall, seven predictor variables explained 25% of the variance in LS.
Since the sample exhibited a wide age range (19–48 years) and age was a significant predictor of both AE and LS, the sample was divided by age to examine whether the same results applied to younger and older students. The sample was split into two groups of approximately equal size. The first group included students aged 18–24 (53.4%), while the second group comprised students aged 25–48 (46.6%). Hierarchical regression analyses were then repeated for each group. Among younger students, family support remained the only significant predictor of both AE and LS (see
Appendix A,
Table A1 and
Table A3). For older students, family support remained a significant predictor of LS (see
Appendix A,
Table A4), but none of the social support variables were predictors of AE (see
Appendix A,
Table A2).
4. Discussion
The findings of this study contribute to the growing body of literature on the role of social support in fostering AE and LS among university students, particularly nursing and physiotherapy students. Consistent with previous research highlighting the significance of social support in academic and psychological outcomes (
Alsubaie et al., 2019;
Brajša-Žganec et al., 2017;
Gayathri & Karthikeyan, 2016;
Geerling & Diener, 2020), family support emerged as a key predictor in this study. Among the three sources of social support examined—family, significant other, and friends—only family support uniquely predicted both AE and LS, underscoring the crucial role of familial relationships in shaping student outcomes. Many prior studies did not differentiate between sources of social support (
El-Sayed et al., 2021;
Liu, 2024;
Qurratuaini et al., 2022), making it impossible to assess their unique contributions. This study mostly aligns with previous research regarding the overall positive association between social support and AE. On a bivariate level, all three sources of social support were associated with AE; however, the regression analysis revealed that only family support was a significant predictor. A similar pattern emerged for LS; family support was the only significant predictor of LS in the regression analysis. It is worth noting that the model predicting LS explained 25% of the variance, whereas the model predicting AE explained only 15%. These findings suggest that social support, particularly family support, plays a more substantial role in LS than in AE. This trend is also evident in the correlation matrix (
Table 3), where family support shows a stronger correlation with LS (0.48,
p < 0.01) than with AE (0.31,
p < 0.01). Similarly,
Hakimzadeh et al. (
2016) found that satisfaction with family and peers had a low correlation with AE but a strong correlation with overall LS. Our findings also align with those of
Alorani and Alradaydeh (
2018), who reported a positive correlation between LS and all three sources of social support, namely family, significant other, and friends, in that order by correlation size. They did not conduct a regression analysis, so their results are not comparable to our main analysis.
The prominence of family support as the sole significant predictor of AE and LS is somewhat surprising, as existing research has not consistently highlighted such a pattern in university populations (
Cao et al., 2024;
Koyanagi et al., 2021;
Mayungbo & Sunmola, 2016). Considering the developmental stage of most participants in the sample (late adolescence, early adulthood) and the typical developmental tasks undertaken in these periods (e.g., forming romantic partnership, belonging to a social group), one would expect friends and significant others to emerge as more relevant predictors of AE and LS (
Berk, 2015). This finding invites an investigation within a cultural framework. Croatia can be viewed as a more traditional society within Europe (
Črpić et al., 2022) and places significant emphasis on family values and the centrality of familial relationships in all aspects of life. It is possible that these cultural norms amplify the role of family as a primary source of support for university students, overshadowing the contributions of other support networks such as friends or significant others. This cultural dimension may differentiate Croatian university students from those in less family-oriented societies and highlights the need for culturally sensitive interpretations of social support research. It is important to note that multicollinearity analysis was conducted using VIF and tolerance values and that no issues were identified. However, family support surely did account for a portion of the variance explained by other predictors, as the sources of social support were highly correlated with one another (from 0.62 to 0.79,
p < 0.01). Although family and significant other support did not emerge as significant predictors in the regression analysis, both showed moderate, positive correlations with AE and LS.
Interestingly, demographic variables such as age and employment status also played a role in AE and LS, with older and employed students reporting higher AE, while employment was negatively associated with LS. This is partially consistent with a study by
An et al. (
2017) who reported that older (senior) nursing students had higher AE compared to juniors and sophomores. However, in their study, freshmen students also had higher AE, which is not the case in our dataset. The findings in our study suggest that although employment may enhance AE through the practical application of skills, it may simultaneously place additional stressors on students, detracting from overall LS. This is congruent with
Behlau (
2010), who reported that employed university students had somewhat lower LS, and
Li-Ping Tang et al. (
2002), who reported that non-employed university students have higher LS. On the other hand,
Lundberg (
2004) reported that students who work 20 or more hours a week have lower AE, which is not congruent with our findings. However, our study is based on students who work and study in the medical field, so that may be the source of the positive association between AE and employment. Also, unemployed students are, on average, younger than employed ones, so it is possible that some of them are unsure whether they chose the right academic path. On the other hand, students who are older or already working are probably more secure about their academic decisions and are therefore more engaged in their coursework. On that note, almost a third of the sample (27.5%) had an average AE equal to 2 or lower (maximum is 6), which means that they estimated their engagement in coursework and learning as somewhat low. A future study should explore the undermotivated subgroup of students more thoroughly. Students who are employed full time (55.1% of the sample) and are simultaneously undertaking their bachelor’s or master’s degree are a unique population and should be explored further in the academic and psychological context.
A further analysis of age-divided subgroups revealed that the impact of social support varies by age for AE. Family support remained the only significant predictor of LS across both younger and older students but was not predictive of AE for older students. These results indicate that the importance of social support may shift over time, with older students potentially relying more on intrinsic or institutional factors to maintain AE. A study by
Cao et al. (
2024) on doctoral students revealed a similar result—peer and family support were not related to students’ AE. This finding warrants further exploration to better understand the evolving role of social support across different stages of student development.
As for the strengths of this research, some studies have previously investigated the relationship between social support and AE or LS in the general population or among university students. However, this study focuses on nursing and physiotherapy students, an underexplored population in this research field. Also, more than half of the sample comprises students who are full-time employed in their study field (nursing and physiotherapy), which is a unique sample of participants in this research field. Including this specific group provides insights into an understudied student population with unique challenges. Additionally, this study examines distinct sources of social support rather than social support as a generalized construct. This distinction allows for a nuanced exploration of how specific sources of social support relate to AE and LS. The questionnaires used to measure the primary study variables (MSPSS, UWES-S-9, SWLS) are widely used, well-validated measures with robust psychometric properties. This methodological choice enhances the reliability and validity of the findings but also facilitates a comparison with previous studies. It is also worth noting that some previous studies have only reported the correlations between variables, viewed social support as a unidimensional construct or not controlled for age, gender, the year of study, etc. This study uses regression analysis, which is superior to simple correlation because it allows for the examination of the unique contribution of each predictor while controlling for potential confounding variables such as age, gender, and the year of study. By doing so, it provides a more accurate and nuanced understanding of the relationship between social support and outcomes.
Despite its strengths, the study has certain limitations. As a cross-sectional study with a correlational design, it cannot capture longitudinal changes or establish causal relationships. The reliance on self-reported data introduces the potential for response bias, such as socially desirable answers, which is a common limitation in research using this methodology. Another limitation is the predominantly female sample, which limits our ability to compare results across genders. However, this gender imbalance reflects the actual distribution of students in nursing and physiotherapy programs and is not unique to this study. An additional challenge involves the interpretation of the significant other subscale because of the wording of the MSPSS items. The term ‘special person’ can be understood differently for different participants. For students in a romantic relationship, the term likely refers to their partner, whereas students who are not in a relationship may interpret this as referring to a family member or close friend. This ambiguity complicates the analysis of this subscale. Future research could address this issue by collecting information on participants’ relationship status and providing a more precise definition of a significant other or special person in the questionnaire.