Determinants of school attendance in elementary school students in Japan: a structural equation model

Background Managing school nonattendance is a priority worldwide. Frequent school nonattendance in early school years has immediate and long-term negative effects. Although strategies to address nonattendance are being developed and implemented, the number of students with school nonattendance issues is increasing. In this study, we explored students’ feelings and perceptions about attending school and the potential determinants of a positive attitude towards attending school. Methods We hypothesized that a positive perception towards attending school was influenced by relationships, perceptions of current circumstances, subjective health, and having someone to share experiences and thoughts with. For examining the hypothesized model, an original questionnaire with 14 items was developed, including perceptions towards school attendance (an item), relationships with friends and school teachers (5 items), current circumstances (4 items), subjective health (3 items), and the individuals available to share experiences and thoughts with (1 item). In total, 6860 children submitted the questionnaire (85.3% response rate) and 6841 responses were included to examine the model. Children were 10 or 11 years old, and selected from 111 state-run schools in 8 randomly selected school districts. Results The final model demonstrated good fit and showed that the latent variable of relationships with friends and school teachers directly impacted on how children felt about attending school. The latent variable of subjective health also directly impacted on how children felt about attending school but not strongly. Other latent variables were not significant. Conclusions The importance of positive relationships with friends and teachers in overcoming school nonattendance has been emphasized in previous studies. This study has provided evidence that these relationships impacted children’s positive perception about attending school in a large sample of students aged 10–11 years. The latent variable of subjective health may require more items to capture mental health. Supplementary Information The online version contains supplementary material available at 10.1186/s13034-021-00391-5.


Introduction
Frequent school nonattendance in early school years has immediate and long-term negative effects on academic performance, graduation rates, social functioning, job opportunities, and health [1][2][3][4]. As school nonattendance has long-term negative effects, it is a public health and educational issue [1]. Therefore, managing school nonattendance is a core theme in educational policy around

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Child and Adolescent Psychiatry and Mental Health knowledge to provide individualized support. Specialist providers may also be required. School counselors are one such resource and have been newly introduced in Japan to support children [17]. In most cases, school counselors support children with more complex social, emotional or behavioral issues [28]. Japan also has some unique characteristics that may contribute to outcomes, including homogeneity, gender differences and social characteristics that may influence attendance. People in a homogeneous society, such as Japan are more likely to think and behave as other people in the group do. An elementary school child may feel different and/or be bullied or discriminated against because of perceived differences [29]. Research shows an important age effect. Nonattendance increases in the 4th or 5th year of primary elementary education [17]. It has been proposed that the introduction of abstract concepts and theory may be a factor [30]; however, the exact casual mechanism remains unknown.
There are state-run and private schools in Japan. State schools adhere to government guidelines, while private schools may implement different policies based on the school's individual philosophy. In societies that value conformity and homogeneity, such as Japan, students are strongly encouraged to go to school, irrespective of their feelings or wishes. A recent nationwide survey revealed that 3.3% of 6450 elementary school students did not want to go to school [31]. The educational board in Saitama, Japan, intended to explore whether the current implementation of strategies to reduce nonattendance was effective. The educational board wanted to explore students' feelings and perceptions about attending school and the potential determinants of a positive attitude towards attending school. The educational board had identified support for students with school nonattendance as a key priority and wanted to develop data and strategies to support school attendance. At the time of the research, there was no locally available, standardized instrument to measure how children felt about attending school. The school refusal assessment scale was proposed [32]; however, a Japanese version had not been developed. Therefore, we developed a new model and questionnaire that described the potential determinants of positive perceptions towards attending school among elementary school students in state-run schools and explored the model in this research.

Study design
The current study was a cross-sectional study of elementary school children in the 5th year in state-run schools in Saitama, Japan. We explored students' feelings and perceptions about attending school and the potential determinants of a positive attitude towards attending school. We hypothesized that a positive perception towards attending school was influenced by relationships, perceptions of current circumstances, subjective health, and having someone to share experiences and thoughts with.

Setting
This study was conducted collaboratively between Saitama Prefectural University and the Saitama educational board. The educational board manages 802 staterun elementary schools (99% of total elementary schools) in Saitama. Those state-run elementary schools are grouped into 72 school districts matched to municipalities. Saitama, located north of Tokyo, has the third largest area, the fifth highest population, and the fourth highest population density. Saitama government issued reports compare southern, northern, western, and eastern areas based on the population and tax revenue. Using the four area groups, we selected randomly 2 school districts from each area, thus, we targeted a total of 8 school districts. Chairpersons of the school districts provided permission to implement the survey. There were 2 chairpersons that did not wish to participate, thus, a second draw was completed to select the next school district. The 8 school districts included presented one ninth (11.1%) of 72 school districts, thus, we expected to obtain data from 89 staterun elementary schools (11.1%) out of 802 schools. The original questionnaire described below was distributed between April and December 2019. Each school district chose the periods for administration. Prior to distribution, school district officers visited the schools, described the aim of this survey to school teachers, and obtained agreement to conduct the survey. Data collection was completed by teachers in each classroom.

Participants
Children begin elementary education at 6 years of age in Japan. Thus, elementary school children in the 5th year were either 10 or 11 years old during the data collection period. There were 8045 eligible children who were in the 5th year for this survey from the selected 8 school districts (Additional file 1: Table S1). Unlike European countries with inclusive policies, children who require special support in school because of physical, psychological, and intellectual issues attend segregated special schools [17]. No school providing special education was included in this survey. For examining the hypothesized model with a structural equation model (SEM), described below, we expected to obtain data from approximately 6838 children (85% of the 8045 eligible children). Generally, SEM requires large sample sizes although no standardized guideline for sample size exists.
To examine the model, an original questionnaire was developed through a collaboration between members of the Saitama educational board and faculty members of Saitama Prefectural University. Those members' specialty was education. The questionnaire was piloted in 100 students by the faculty member who initiated the project to confirm the face-validity and interpretability of the questions. Several meetings, including face-to-face discussion, videoconference and email discussion, were held between the members of the development team to finalize the questionnaire. Wordings for questions were refined based on the literature, guidelines issued by the educational board, and the expertise of the development team. It was strongly felt by the development team, given their experience working in and around schools, that a large number of questions would be a burden to the participants; thus, a shorter tool was desirable.

Measurement
There were 14 items in the original questionnaire. The first 13 items targeted intrapsychic and interpersonal determinants of positive perceptions towards attending school. The 14th item listed potential persons who were accessible for the participants to share their experiences.
To capture how children felt about attending school, the item wording was "I am looking forward to going to my school". The responses were 4 = strongly agree, 3 = agree, 2 = disagree, and 1 = strongly disagree.
To capture positive relationships with friends and school teachers, the following five items were positively worded: "I play with friends a lot", "I get along well with friends", "Other kids like me", "School teachers approve of my efforts" and "I am happy when talking to school teachers". For the five items, the responses were 3 = very much, 2 = a little bit, and 1 = not at all.
To capture the positive perceptions of current circumstances, the following four items were positively worded: "I am able to prepare for classes by my own", "I am proud of myself ", "I am helpful to others" and "I believe my efforts will be rewarded". For the item about being able to prepare for classes independently, the responses were 4 = very well, 3 = fairly, 2 = poorly, and 1 = not at all. For other items, the responses were 3 = very much, 2 = a little bit, and 1 = not at all.
To capture subjective health, the following three items were employed: "My health status", "I get tired easily" and "I have anxieties and/or worries". For the general health status, the responses were 4 = good, 3 = fair, 2 = not very good, and 1 = not good at all. For the item for tiredness, the responses were 3 = not tired at all, 2 = sometimes tired, and 1 = frequently tired. For the item about anxieties and/or worries, the responses were 3 = no anxiety/ worry at all, 2 = a little bit of anxiety/worry, and 1 = a lot of anxiety/worry.
To capture the persons with whom the children shared their experiences and thoughts as the 14th item, the following eight responses were selected: (a) my mother, (b) my father, (c) my siblings, (d) other family members/ relatives, (e) school teachers, (f ) a school counselor, (g) instructors of extracurricular activities, and (h) friends. The item also asked the participants the frequency of accessing those persons. The responses were 3 = frequently, 2 = sometimes, 1 = rarely, and 0 = there is no such person.

Ethics
The research protocol was reviewed and approved by the Research Ethics Committee at Saitama Prefectural University (No. 19078).

Statistical methods
The statistical data analysis included descriptive statistics, Cramer's V, Spearman's rank correlation coefficient, and a SEM. The analysis was conducted with HAD 17.0 [33], SPSS v.26 for Japanese (IBM, Japan), and Mplus version 7.3 [34].
Before conducting the SEM, we observed the data characteristics. Because the data were collected from 8 school districts, we explored individual-level variance and group-level (school district-level, in this study) variance [35]. Group homogeneity was identified with intraclass correlation coefficient (ICC). A high ICC results in a biased error variance in conventional regression models, overestimating the relationship between variables. An ICC of 0.25 and higher indicates that much of the variation in the dependent variables is due to the features of groups rather than the characteristics of individuals [36,37]. We employed a more stringent value of 0.001 for a significant difference. Additionally, we observed sample descriptive data with individual-level variance. We compared boys and girls according to the survey items. For the comparisons, we used Cramer's V, which indicates how strongly two categorical variables are associated, with 1 indicating a strong association and 0 indicating no association. Values of 0.1, 0.3, and 0.5 are considered to be small, medium, and large effect sizes, respectively [38]. We also used Spearman's rank correlation coefficient between the variables. Coefficients were interpreted as limited (0.00 to 0.25), fair (0.25 to 0.50), moderate (0.50 to 0.75) and excellent (0.75 to 1.0) [39].
SEM with ordinal data was conducted using the modified weighted least squares method (WLSMV). We examined the hypothesized model using all data obtained by the original questionnaire and then, modified the model. The model fit indices were comparative fit index (CFI), Tucker Lewis index (TLI), and root mean square error of approximation (RMSEA). For CFI and TLI, a value higher than 0.9 is the best model fit. For RMSEA, a value of 0.05 and smaller is a close fit, a value of 0.08 and smaller is a reasonable fit, and a value of 0.1 and higher is a poor fit [40]. The RMSEA value was supplemented with a 90% confidence interval (90% CI).

Participants
The average response rate was 85% (between 78.9% and 95.4% in school districts) (Additional file 1: Table S1). In total, 6860 children completed the questionnaire (the response rate was 85.3%). Among the collected data from 6860 children, 19 children were excluded because of responding to two items and fewer. As a result, data from 6841 children were analyzed. Among them, 2995 (43.78%) were boys, 3169 (46.32%) were girls, and 677 (9.9%) were children of uncategorized gender. Across the school district, no significant difference was observed in percentages between boys and girls (0.032 for Cramer's V, p = 0.521). Every student was either 10 or 11 years old. Table 1 shows the values for the valid sample number, interclass correlation, and p-value for each question item.

Descriptive data
Across the question items, the valid data rates were 95% and higher. No question item showed an ICC value of 0.05 or higher, indicating that all data could be described with individual-level variance. Table 2 shows the response characteristics according to response alternatives in each item. For the item "I am looking forward to going to my school", 45% of the children responded "agree", followed by "strongly agree" (35%), "disagree" (14%) and "strongly disagree" (5%).

Reponses characteristics
Regarding the positive relationships with friends and school teachers, 70% of the children indicated "very much" for "playing with friends a lot", and 80% of the children indicated "very much" for "getting along well with friends". More than 85% of the children perceived that other children liked them ("very much" and "a little bit"), school teachers approved of their efforts ("very much" and "a little bit"), and they were happy when talking to school teachers ("very much" and "a little bit").
Regarding the positive perceptions of current circumstances, more than 80% of the children perceived that they were able to prepare for classes independently ("very well" and "fairly"), were proud of themselves ("very well" and "a little bit"), and were helpful to others ("very well" and "a little bit"). More than 95% of the children believed their efforts would be rewarded ("very well" and "a little bit").
For the items on health status, 95% of the children perceived their subjective health status positively ("good" and "fair"). Only 20% of the children "did not get tired at all" while 80% of the children perceived becoming tired ("sometimes" and "frequently"). Only 30% of the children "had no anxiety/worry at all" while 70% of the children perceived having anxieties/worries ("a little bit" and "a lot"). Table 3 shows the response characteristics regarding the persons the children talked to when sharing experiences and thoughts with. More than 90% of the children indicated doing so with their mother ("frequently" and "sometimes"). More than 70% of the children indicated doing so with their father ("frequently" and "sometimes"). More than 60% of the children indicated doing so with siblings, other family members/relatives, and school teachers ("frequently" and "sometimes"). For school counselors, nearly 50% of the children indicated "rarely" and more than 40% of the children indicated "no one such person". For instructors of extracurricular activities, more than 40% of the children indicated "rarely". More than 80% of the children indicated doing so with friends ("frequently" and "sometimes").
Regarding the comparisons of response characteristics between boys and girls, all question items indicated an ignorable level or no association in the comparison, indicating no difference in responses between boys and girls. Table 4 shows the values for correlation coefficients between variables. No variable showed significant and positive correlation with how children felt about attending school ("I am looking forward to going to school") at an excellent or moderate level. The following variables showed significant and positive correlations with how children felt about attending school at a fair level: "getting along well with friends" (r = 0.303), "other kids like me" (r = 0.306), "school teachers approve of my efforts" (r = 0.339), "being happy when talking to school teachers" (r = 0.428), "being able to prepare for classes by own" (r = 0.254), "being proud of oneself " (r = 0.320), "being helpful to others" (r = 0.314), "believing one's efforts will be rewarded" (r = 0.306), and "subjective health status" (r = 0.273). One significant and positive correlation at a moderate level was observed between "being proud of oneself " and "being helpful to others" (r = 0.526). Among the latent variables, the following relations were observed. Positive relationships with friends and school teachers was positively and significantly associated with a positive perception of current circumstances (0.789 for the path coefficient value), positive subjective health (0.519) and having someone to share experiences and thoughts (0.432) (all p < 0.001). A positive perception of current circumstances was positively and significantly associated with positive subjective health (0.519 for the path coefficient value) and having someone to share experiences and thoughts (0.411) (both p < 0.001).

The initial model examination
Positive subjective health was positively and significantly associated with having someone to share experiences and thoughts (0.260 for the path coefficient value, p < 0.001).
For the latent variable of positive relationships with friends and school teachers, the path coefficient values for the variables were between 0.764 and 0.566 (all p < 0.001). For the latent variable of a positive perception of current circumstances, the path coefficient values for the variables were between 0.800 and 0.419 (all p < 0.001). For the latent variable of positive subjective health, the path coefficient values for the variables were between 0.826 and 0.340 (all p < 0.001). For the latent variable of having someone to share experiences and thoughts, the path coefficient values for variables were between 0.717 and 0.529 (all p < 0.001). A school counselor was an exception, showing a low path

Discussion
This study identified the structural relations among positive perceptions of attending school for elementary school students in the 5th year in state-run schools in Saitama, Japan. The latent variable of positive relationships with friends and school teachers was positively and directly associated with children's feelings towards attending school. Previous studies emphasized the importance of positive relationships with friends and teachers for overcoming school nonattendance [11][12][13][14][15][16][17][18][19][20][21][22][23][24]. This study found that these relationships were important for positive perceptions of attending school for elementary school students in the 5th year. Other latent variables did not influence feelings towards attending school strongly or did not impact it at all; however, those latent variables were positively and significantly associated with the latent variable of positive relationships with friends and school teachers. Some individual items (e.g., "being able to prepare for classes by own", "being proud of oneself ", "being helpful to others", "believing one's efforts will be rewarded", and "subjective health status") indicated significant correlations with feelings towards attending school. Future It may be important to consider positive subjective health with greater regard to psychological health. Peer acceptance in school is associated with subjective health [41]. Support from school teachers and classmates has also been found to be significantly and positively related to "school satisfaction" [42] and emotional stability [43] among elementary school students. Feelings of being supported by adults have been identified as important for children with social, emotional and mental health-related difficulties to flourish in the school environment [44]. Teachers have the potential to improve and intervene in students' mental health [45]. A range of interventions have been tested for mental health promotion in schools with varying degrees of success [46]. Evidence-based strategies to improve positive emotions and well-being may be useful in supporting children who have issues with attendance [47][48][49][50].
There was an item of "having anxieties and/or worries" in this study with 73% of children either stating "a little bit" or "a lot" anxieties and/or worries. Internalized mental health issues with high frequencies in children should be examined in future studies.
This study highlighted that more than 60% of the children in this study indicated that school teachers were the people to whom the children talked when sharing experiences and thoughts, a frequency that was equivalent to siblings and other family members. It implies that school teachers were perceived as accessible and available adults. For reducing the burden of school teachers, school counselors have recently been introduced in Japan [17]; however, the presence or absence of school counselors was not found to be important in this study. The employment system of counselors, i.e., being employed directly by school district offices but not in schools may account for this result. For elementary school students, specialist counsellors were not as accessible as other staff, such as teachers.

Strengths and limitations of the study
A large random sample, obtained by collaboration with the educational board in Saitama, Japan, enabled us to examine our hypothesized model robustly. An excellent response rate was supported by the school teachers who distributed and collected the original questionnaire. However, this study has some limitations. The first issue is the reliability of the original questionnaire although it was developed based on previous studies [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][18][19][20][21][22][23][24] and national guidelines [17], as well as previous piloting. The current study was the first attempt to examine the questionnaire with a large sample and explore the hypothesized model. There may be other variables that were not included that account for some of the variance in the outcomes. Additionally, the generation of items was based on a rigorous development process; however, children were not included in development. Future studies may replace the current variables or add variables to improve the model fit indices. Methods including students may be used to improve the questionnaire. The second issue was missing information regarding whether students with a non-school attendance history were included in this study. Thus, we were unable to compare responses between students with poor versus good attendance. In future studies, asking whether students have a non-school attendance history and whether they have obtained support to overcome it, may be needed. The third issue was a homogeneity of the students in terms of school setting and age rage. Thus, the model has to be examined in different settings and a wider age range.

Conclusions
This study examined children's perspectives on school attendance and related variables through a survey of 6841 students in the 5th year of state-run elementary schools. This study found that positive relationships with friends and school teachers were significantly and positively associated with children looking forward to attending school. Positive health status was also significant, but the relationship was not as strong. This study explored determinants of school attendance by using a novel questionnaire in Japan and reported the findings by presenting an original model.