Study Design
The study employed an observational cross-sectional study design. Observational studies, also called epidemiological studies, are conducted in such a way that the researcher has no influence on the study phenomenon [16].
Study Area
The study was conducted in Owerri, Imo state, Nigeria. Owerri is the capital of Imo State, located in the South-eastern geopolitical zone of the country and lies on Latitude 5.4860N and Longitude 7.0350E. Owerri has three different Local Government Areas- Owerri Municipality, Owerri North and Owerri West. The city has an estimated population of 401,873 people as of 2006 but projected to about 516,610 in 2015 (National Population Commission, 2006) with total land area is 550.848 km2 from the city. With a well-developed road network, Owerri is the hub of economic and industrial activities for people in and around the entire South-Eastern geopolitical zone [17].
Study Population
The populations surveyed were members of the public in both urban and rural communities in Owerri, Imo state, Nigeria. This population cuts across several sectors of the economy. Some are in civil service and other cooperate professions (white collar), the rest are students, traders, and artisans. Owerri is known as an entertainment hub; tourists and travelers always troop into the city.Thissituation is an important driver of the transmission and spread of COVID-19.
All obviously sane adult and youth members of the study area who are present at the selected study sites at the time of data collection were all included in the study.
Sample Size
After the population of each of the settings were been estimated, sample size determination table was then used to determine the required sample for each of the sites [18]. Table 1 shows the estimated numbers of people in the various study sites and the corresponding sample sizes as determined with the sample size determination table.
Sampling
Owerri was purposively selected as the study site for being the Imo State capital,therefore a true representation of the situation in the state. Owerri west and Owerri North were, however, included as study sites because of their proximity to Owerri municipal (State capital) and for their being rural areas. In each of the study areas, one setting each (bank, hospital, school, commuter motor part, church and market) was selected as the study site.
In the various study sites, every eligible individual that visited were observed for the variables of interest, making sure not to observe an individual twice. This was done until the required sample size was arrived at.
Data Collection Tool
The study data was collected using a standardized observation checklist (OCL). The OCL was designed to obtain information on the location, setting, time, gender, age category, facemask use, type of facemask, condition of the facemask and mode of facemask use of people in the study area.
On the checklist, location was described as urban and rural; and study sites were: churches, market/business premises, school, commuter park, bank, and health facilities. The time options included morning, afternoon and evening. Age groups observed were adolescent, adults and the elderly. The different types of facemasks listed were surgical mask, cloth mask and filtered mask. However, a space for others was added. Another important component of the checklist was the mode of facemask use which included: correct use, uncovered mouth and nose, uncovered nose, inside out and upside down.
After the OCL had been checked for relevance to the subject matter, clarity and appropriateness of language, the instrument was pre-tested in a setting and condition that is similar to that of the research study area. This was done not to report results but rather to check for glitches in wording, ambiguousness, lack of clarity of instructions etc. The structure and contents of the tool were later refined in the light of weaknesses spotted during the pretesting.
Data Collection
The research assistants positioned at strategic places around the study sites, careful enough not to allow the study candidates to be aware that they are being observed, the researchers also ensured that no single individual was observed twice as they went about their normal businesses. The observers then ticked the checklist based on what they observed in each location.
Demographic Characteristics and Frequency of the Use of Facemask
A total number of 3100 participants were observed in terms of facemask usage in Imo state (Table 2). Among the study participants, 861(27.8%) were observed from the rural areas and 2239(72.2%), were observed from the urban areas. Observation was carried out in the various settings as follows, bank 506(16.3%), church 290(9.4%), Commuter Park 563(18.2%), health facility 441(14.2%), market/business premises 779(25.1%) and school 521(16.8%). The most common age group in this study was adult (62.2%). About 1777(57.3%) of the observedindividualsweremales. Majority of the observation 1497(48.3%) was carried out in the morning and the least observation in the evening (12.9%). Among the observed participants, 1438(46.4%) used facemasks. The most common facemask used was cloth mask [887(28.6%)]. About 16%of the participants correctly used their facemasks. Only 499(16.1%) of the participants wore facemasks that appeared to be clean. Also only 305 (10.0%) of the observed worefacemasks that appeared to be new.
Rate of facemasks usage by location, settings, time, gender and age group
Table 3 depicts the rate of facemasks usage by location, settings, time, gender and age group in the study area. The overall observed facemask usage was 46.4%. More facemask usage was observed in the urban area (49.2%) compared to the rural areas (39.0%). The health facility was the study site in which highest frequency of facemask usage was observed (74.4%), while the least facemask usage was observed in market/business premises (20.2%). Highest rate of facemasks usage was observed in the morning (52.0%) while it was lower in the evening (21%). Males (48.6%) used facemasks than the female (43.5%). Also, adolescents (47.8%) usedfacemasks more than other age group with the lowest usage observed among the children (20.5%).
Association between facemask usage and the demographic characteristics of candidates
Association between facemask usage and the demographic characteristics of respondents is depicted in table 4. A statistically significant association was found between facemask usage and location (p<0.001) as more candidates in the urban location made use of facemasks (49.2%) compared to candidates in the rural locations (39.0%).
Study sites were also found to be significantly associated with facemask usage (p<0.001), where more people in the bank made use of the facemasks (71.7%), and least usage was found in the market/business premises (20.2%).
More facemask usage was observed in the morning time (52.0%), the least usage was observed in the evening (21.2%), the association between time period and facemask usage was found to be statistically significant (p<0.00).
More males (48.6%) than females (43.5%) were observed to use facemasks. The association between gender and facemask usage wasstatistically significant (p< 0.001).
Age category was also found to be significantly associated with facemask usage (p< 0.001), as more adolescents (47.8%) made use of their facemasks compared to the elderly (46.8%) and the children (20.5%).
Association between modes of facemask usage with demographic characteristics of candidates
Table 5 shows the association between modes of facemask usage with demographic characteristics of study candidates. Study candidates from the rural location (61.9%) and the urban location (64.7%) who made use of facemasks wore them wrongly. The association between location and mode of facemask usage was, however, not significant (p> 0.005). In the banks, only 41.3% of the candidates with facemasks wore them correctly, this situation of correct facemask usage was 35% in the church, 34.4% in the commuter park, 37.8% in the market places, and 20.0% in the health facility. Also, no significant association was found between study sites and the mode of facemask usage (p> 0.005).More children (75.0%) wore their facemasks correctly compared to the adults (33.4%) and the elderly (33.2%). A statistically significant relationship was found between age categories of the study candidates and their mode of facemask usage (p< 0.005). Also, more males (37.3%) than females (33.9%) made use of their facemasks appropriately. The association between gender and facemask usage was not significant (p> 0.005).Meanwhile appropriate facemask usage was observed more in the evening (40.0%) than in the afternoon (34.3%) and in the morning (36.8%).The association between time of the day and mode of facemask usage was not statistically significant (p > 0.005).
Association between the condition of facemasks and thedemographic characteristics of study candidates
The association between the conditions of facemasks used and demographic characteristics of study candidates is shown in table 6. More people from the urban area had clean (35.9%) and new (22.1%) facemasks compared to people from the rural areas who had 30.7% and 19.7% clean and new facemasks respectively. More people from the urban area also had dirty (15.7%) compared to people in the rural areas (11.6%). The association between the condition and the quality of the facemask worn and the location of the candidates were found to be statistically significant (p< 0.001).
It was also found that the church had more people with clean (34.2%) facemasks, while the bank had more people with facemasks (27.1%). More individuals with worn-out facemasks were found in the market/business premises (40.0%). Overall, the association between the study sites and the condition of facemasks used was significant (p< 0.001).
More people were observed to put on clean facemasks in the afternoon (37.6%) compared to in the morning (34.6%) and in the evening time (16.5%). Whereas, more people were observed to put on new facemasks in the evening (28.2%) compared with in the morning (24.0%) and in the afternoon (17.0%). Worn-out facemasks were observed more in the evening (40.0%) compared to in the morning (26.1%) and in the afternoon (31.5%). The association between time of the day and the condition of the used facemask was found to be statistically significant (p<0.001).
More female had clean facemasks on (36.3%) compared to the males (33.6%). Ironically, more female had dirty facemasks on (17.0%) compared to the males (13.2%). More males, however, had worn-out facemasks on (32.3%) compared to the female (24.2%). The relationship between gender and the conditions of the facemasks was not significant (p> 0.005).
In the age category, the adults had more clean facemasks on (36.4%) compared to the other age categories. The elderly had more dirty facemasks on (21.3%) compared to the other age categories. The children had more new facemasks on (62.5%) compared to the other age categories, while the adolescents had more worn-outfacemasks on (36.6%) compared to the other age groups. The association between age category and the condition of the facemasks was also found to be significant (p<0.001)