Examining school-based hygiene facilities: a quantitative assessment in a Ghanaian municipality

The methodological approach adopted for the study was quantitative. A study seeking to objectively assess the existence, proportions and relationships between existing facilities is better approached from a positivist perspective, and hence the choice of a quantitative methodology. A cross-sectional design was employed for this assessment, and so study variables were assessed at only one point in time.

The study population was made up of all public junior high schools within the Ejisu-Juaben Municipal Education Directorate. In all, there were 80 public junior high schools organised within 10 educational circuits. The list of schools was obtained from the Municipal Education Directorate. A representative sample of 37 schools was derived using two complementary formulas by Yamane and the Pennsylvania State University [9, 10].

In a bid to ensure that each school in all 10 educational circuits had an equal chance of being a part of the study, and in a manner that enhances the external validity of study results, a stratified random sampling technique was employed. With this technique, educational circuits constituted the strata, while schools constituted the sample units. In line with the above technique, a proportionate stratification approach was used [11]. This approach ensured that the sample size (i.e. number of schools required from each educational circuit) of each stratum (i.e. an educational circuit) was proportional to the population size of the stratum being considered [12]. Table 1 shows the estimated number of schools from each educational circuit.

Data was collected from March 2016 to July 2016, spanning a period of five calendar months. A checklist adapted from UNICEF and Moore et al. aided the environmental audit of schools in order to obtain first hand data on existing facilities [6, 13]. A decision on which facilities to target was guided by a WASH in schools monitoring package developed by UNICEF [6]. The observation tool was pretested in a junior high school located in a municipality which is contiguous to the geographic scope of this study (student enrolment, n = 256), and was subsequently fine-tuned. For instance, after the pretest it became necessary to include an item that enabled the observation of a functional toilet facility within schools. This was essential due to the complementarity of the concepts of hygiene and sanitation. Where required, clarifications on facilities were sought from the head teacher or an authorized representative of the school. The checklist makes use of dichotomous questions and assesses the school environment based on predetermined parameters, including: accessibility and source of water point, existence of handwashing stations, functionality of toilet facility, and accessibility to the toilet facility.

Data was collected by the lead researcher with assistance from trained field enumerators. Field enumerators were given a 3-h training by the lead researcher who has substantial experience in observational studies. All field enumerators were university graduates serving as teaching and research assistants in a public university.

Descriptive statistical analysis was used in describing the existing facilities for handwashing in schools. For profiling the existing WASH facilities in participating schools, a scalogram model was used. In exploring for possible relationships between key variables, and differences in proportions of variables, statistical tests used were the Student’s t-test, Fisher’s exact test, and a two-sample proportion test. Data was analyzed using STATA version 14.0 (STATA Corp., College Station, Texas).

The research protocol was reviewed and subsequently granted clearance by the Committee on Human Research, Publications and Ethics (CHRPE) of the Kwame Nkrumah University of Science and Technology, Ghana. In addition, an approval to conduct the research was obtained from the Ejisu-Juaben Municipal Education Directorate of the Ghana Education Service, a regulatory body of all basic schools within the study area.

Observations of hygiene facilities occurred in all 37 schools. All participating schools were public, and none was a single-sex school. The mean student enrolment was 153 (SD = 81.9). The minimum student enrolment was 46 while the maximum was 394. Table 2 presents summary statistics on the proportions of schools with specific facilities.

Of the 37 participating schools, 6 (16%) had a functional handwashing station. The average number of functional handwashing stations was 2 (SD = 0.98). Only 19% of schools had a handwashing facility attached to a toilet facility. Also, 23% of schools had a separate handwashing station for teachers. Also, 33% of schools had students washing their hands in a shared receptacle (bowl), 24% had students using a single cotton towel to dry hands after handwashing, and none of the schools had a paper towel displayed for hand drying.

With regards to functional toilet facilities, 56% had this within the school compound. The types of toilet facility observed were the WC (6%), VIP (6%) and the Simple Pit Latrine (88%). The mean number of cubicles within a toilet facility was 4.9 (SD = 2.6). All schools had a separate section of the toilet facility for males and females. Also, 75% of schools had a separate section designated for teachers.

The observed handwashing (HW) and related facilities in participating schools are profiled with the aid of a scalogram model presented as Table 3. With reference to Table 3, columns 1 and 2 present a list of all sampled schools with their respective student enrolment figures. The second row presents the facilities assessed in this study. Corresponding to the facilities are codes indicating whether or not a particular facility exists in a particular school. Thus, code “1” means a facility exist, while code “0” means otherwise. At the base of the matrix are the corresponding weights of each of the facilities calculated by dividing the assumed centrality by the total number of facilities. Columns 11 and 12 shows the total number of facilities in each school as well as the centrality indices. Centrality index is a sum of the weights of all facilities which exist in a particular school.

From Table 3, school with identifier 0037 had the highest centrality index (CI = 84.80) by having nearly all observed facilities in school. On the other hand, schools with the lowest CI include 0002, 0009, 0012, 0013, 0016, and 0019 (all with a CI = 0.0), depicting the non-existence of at least one of the facilities for which observations were made.

Differences in proportions, and differences in means of group variables were explored and the results are presented in Table 4. Results of an independent samples t-test shows a statistically significant difference in mean student enrolment of schools which had a functional toilet facility and schools which did not a functional toilet facility [t(35) = − 2.06, p = .04]: Schools which had a functional toilet facility were observed to have a higher mean enrolment fig. [M = 177(SD = 76)], when compared with schools which did not have this facility [(M = 123(SD = 82)]. On the contrary, there was no statistically significant difference in the mean student enrolment of schools where a functional handwashing station existed and schools where it did not exist [t(35) = − 0.38, p = .69].

To determine the possible associations existing between explanatory variables (i.e. functional water facility, functional toilet facility, existence of a financial provision for water supply), and a response variable ‘functional handwashing station’, results of a Fisher’s exact test (two-tailed) indicated a statistically significant association between ‘functional handwashing station’ and ‘functional water facility’ (p < .001; Fisher’s exact), and also ‘financial provision for water supply’ (p = .03; Fisher’s exact), but not ‘functional toilet facility’ (p = .16; Fisher’s exact).

In a bid to further examine the differences in proportions of each of the pairs of categories of explanatory variables (where a statistically significant p-value was generated), results of a two-sample proportion test (two-tailed) indicated that 83% of schools which had functional water facilities also had functional handwashing stations. On the other hand, only 3% of schools which had functional water facilities also had functional handwashing stations. A test of difference in the proportions of the two sets of schools showed a statistically significant difference (z = − 4.87, p < 0.001).

In addition, 40% of schools which had financial provisions for water supply also had functional handwashing stations. On the other hand, only 7% of schools which had financial provisions for water supply also had functional handwashing stations. There was a statistically significant difference in the proportions of the two sets of schools (z = − 2.38, p = 0.02).

The study has shown that most schools had soap available to students (68%). Also, few schools had a functional water facility (16%). Similarly, few schools had a functional handwashing station (16%), which leaves much to be desired, considering the fact that 21% of schools in the developing world have handwashing facilities [14]. Furthermore, a large number of students wash their hands in a shared receptacle and also dry their hands with a common towel. More so, only half of the number of schools have a functional toilet facility within the schools’ premises. In such a situation, students could potentially resort to public toilet facilities, private homes or open defecation. It is however worth noting that the existence of a toilet facility in a school does not automatically guarantee its usage. Factors including facility age, and facility type could influence facility usage [15]. In this study, a simple pit latrine is identified to be the most common toilet facility in participating schools (88%). This condition obviously raises concern since a pit latrine is an unimproved toilet type, and hence not recommended for a school setting [5].

The availability of soap in schools is crucial to the promotion of school-based handwashing with soap (HWWS). However, it is well understood that the mere availability of soap does not imply the existence of a handwashing station, as additional facilities are required. Though the results show that most schools had soap available, it is also evident that few schools had a functional handwashing station, and therefore the use of soap (which was mostly found in front of offices of teachers) could have been used for other purposes such as washing teachers’ dishes after meals. The commonality of soap is consistent with the result of a study conducted in Ghana which showed that 96% of study settings had soap available, but were used for other purposes apart from handwashing (e.g. washing dishes) [16]; and with another which reported that 83% of a sample of schools in Ghana had soap available [8]. The result is however in contrast to that of a study conducted in Senegal which reported that only 10% of participating schools had soap available to students [17].

Furthermore, the situation in which only 19% of schools had a handwashing facility attached to (or located within the premises) of a toilet facility appears worrisome and inconsistent with existing guidelines for setting up WASH facilities in schools [5]. It is common knowledge that the proximity of a handwashing facility to a toilet facility can potentially influence adherence to HWWS after toilet use.

The situation in which a large number of schools use a shared receptacle for students’ handwashing, and a shared cotton towel for students’ hand drying leaves much to be desired. In a country where infectious diseases continue to claim many lives, the implications of this practice on cross-infections is a matter of concern. In a recent study conducted in Ghanaian preschools, 8 different bacteria, 2 different parasites and a fungus were observed in water samples collected from a shared receptacle used by school children for handwashing [18].

The gloomy situation described above could potentially be explained in part by the WASH facility deficiency which appears to be characteristic of many schools in the municipality. The result of the scalogram analysis points to a situation where many schools are constrained in terms of basic facilities such as a functional water facility, a functional handwashing station, paper towels, and a financial provision for WASH. An observation of the centrality indices from the scalogram matrix shows that some schools (16%) have as low as 0.0 index indicating the non-existence of any of the observed WASH facilities. The WASH facility deficiency characterising participating schools is similar to a situation reported in Malawi where only 33% of handwashing facilities in schools were functional, and no school had soap available for handwashing [19]. An intervention by government and civil society organisations in addressing the situation will be timely.

With respect to functional toilet facilities in schools, the mean student enrolment was higher for schools which had this facility when compared with schools which lacked this facility. The higher student enrolment figures observed among schools with a functional toilet facility could suggest the possibility of a facility-driven selection of schools by parents or guardians. However, it is beyond the purview of this present study to draw such conclusions since additional studies may be required to draw a conclusion. The existence of a functional toilet facility was however not associated with the existence of a functional handwashing station, which is an issue of concern considering the crucial complementarity of a handwashing station and a toilet facility [5].

Furthermore, a greater proportion of schools which had a functional water facility also had a functional handwashing station. The existence of a functional water facility in a school is crucial to the setting up of a functional handwashing station. Among others, this facilitates the provision of adequate running water which has been identified as key to the practice of proper handwashing with soap [20, 21].

Similarly, a greater proportion of schools which had a financial provision for water supply also had a functional handwashing station. To ensure the sustainability of functional handwashing stations in schools, the role of a budgetary allocation is imperative, and the result of this study has shown that a financial provision is essential to the existence of a functional handwashing station in schools. Recognizing the crucial role of a financial provision, it becomes a concern that few schools reported the existence of this scheme (27%). This result is consistent with that of a study conducted in Nicaragua where 95% of schools did not have a budgetary allocation for the provision of an essential WASH facility as soap [22].

The generalization of results of this study is limited to settings which have socio-economic characteristics similar to that of the geographic scope of this study.