This study was descriptive and cross-sectional in design. An online-based questionnaire was shared through messaging platforms to elicit information on socio-demographic and socioeconomic characteristics, food expenditure and purchasing behavior during Nigeria’s nationwide lockdown months of April and May, 2020. Respondents’ participation was entirely voluntary and anonymous.

Responses were received in a spreadsheet and transferred into Statistical Package for Social Sciences (SPSS) version 20.0. A total of 883 responses were received before data cleaning commenced. Data processing of the FIES questions was carried out using the methodology presented by the Food and Agriculture Organization [7] [8]. The discrete assignment approach was used to further classify responses from the FIES module. The cleaned data were analyzed and presented using descriptive and inferential statistics. Chi-square was used to test for statistical associations between variables. Significance was set at p < 0.05.

A summary of responses showed that most of the respondents (90.5%) were staying at home or had stopped going to work due to COVID-19 lockdown restrictions. The socio-demographic, economic and household characteristics of respondents are presented in Table 1. Responses were mostly from urban residents (62.0%) and only 8.3% in rural areas. The age categories of respondents revealed that 37.1% were aged 21 - 30 years, 30.4% were 31 - 40 years, and 18.2% were 41 - 50 years. Households with 4 - 6 members were predominant (55.3%) and those with more than 10 members constituted only 4.2%. Household composition showed that about 25% of all respondents had at least one household member who was aged below 5, 5 - 9 and 10 - 17 years of age. Most of the respondents had at least a post-secondary education (97.1%). Occupational distribution showed that 27.5% were in professional/managerial cadre and 15.3% were into sales and services while 16.0% were unemployed. The income pattern of respondents showed that 66.7% earned monthly salary and 7.2% earned daily income. Over half of the respondents (63.1%) had experienced lack of money in the previous 4 weeks prior to the survey. A similar impact of restrictions on source of livelihood and income has been reported in Ethiopian households [9] and this appears to be a worldwide pattern resulting from lockdown restrictions seeking to control the spread of COVID-19.

The reasons for respondents’ current purchasing behavior (ranked in order of popularity of response) are also presented (Table 2). Respondents who now purchased less than their usual food stock gave “insufficient money for food” as their main reason. For respondents who now purchased more than usual, the most popular response was “because everyone is home we now eat more as there's nowhere to go” and the least popular was “because I am at home, I now eat all my meals at home instead of eating out”. Those whose purchasing behavior did not change mostly said “my income and budget have not changed”.

Generally, restrictions resulted in alterations to food purchasing. While the decision to buy less was influenced more by purchasing power of the individual/household, those who bought more, mainly did so out of necessity and uncertainty. Most respondents claimed to deviate from their usual purchasing pattern (Table 3). More households purchased extra food than usual during the lockdown and accounted to 386 (43.7%) of all respondents compared to those who purchased less (31.8%). Baker et al., 2020 [10] examined the purchasing pattern of American households and found substantial alteration in food expenditure which initially increased as lockdown restrictions were introduced. In this study, majority (63.3%) expressed worry that lockdown extension could affect ability to feed and 48.2% had experienced insufficient money for food expenditure or inadequate food supply in the period of 7 days preceding the survey. Disaggregation of food purchase activities by household size revealed that households with <3 members and 4 - 6 members purchased more food than households with 7 - 9

members and >10 members (Table 3) which implies that households with higher size purchased less food than usual compared with smaller sized households (p = 0.012). Similarly, households with 7 - 9 members and >10 members reported shortage of food/money for food than household with <3 members and 4 - 6 members (p = 0.05). These patterns suggest pressure on available financial resources in larger households and therefore corroborates the reasons earlier given for the category of “less than usual” spending behaviour. Further extension of movement restrictions was a source of worry for most of the respondents sampled in this survey based on household size (p = 0.001). Since most of the respondents had earlier mentioned being affected by stay at home orders, findings from this study confirm a fear of uncertainty and barriers to economic food access especially in larger sized households. These responses confirm a strain on access to food which in most cases was as a result of uncertainty during the period of lockdown.

Table 4 shows the affirmative responses to individual items on the Food Insecurity Experience Scale (FIES) questionnaire which probed food access in the previous 4 weeks. While 56.1% worried they would not have access to enough food to eat, 63.1% ate only a few kinds of foods and 53.3% had to skip a meal in the reference period. This indicated that the prevalent experience of more than half of the respondents clustered around worrying about running out of food, compromising on diet quality and reducing food quantities or skipping meals, as demonstrated by the higher affirmative responses to the first five FIES questions. The FIES tool measures food insecurity severity along a continuous scale of severity [8], it presents moderate food insecurity when individuals or households begin to eat low quality diets or are forced to also reduce the quantity of food

they would normally eat. Those experiencing severe levels would have gone for entire days without eating, due to lack of money or other resources to have access to food; as shown by the responses to questions 6, 7 and 8. In this study, although very few of the respondents (4.5%) went a whole day without eating anything because there was not enough food, more than a third gave a ‘yes’ response to the question “in the last 30 days (4 weeks), was there a time when you were hungry but did not eat?”.

Overall, 57.7% of the respondents were food secure, 28.4%, were experiencing either of moderate or severe forms of food insecurity and the severely food insecure households amounted to 113 (13.9%) (Table 4). Going by definitions stated in the FIES methodology [7], the estimated number of respondents living in households where at least one adult was found to be food insecure is close to half. Numerical comparisons with previous national estimates were not done (due to statistical validation constraints). However, when a contextual comparison with reports in literature was done, the experiences reported in this study were not different from lockdown situations from different parts of the world [5] [9] [11] [12].

Further analysis of results in this study reveal that factors related to experiencing food insecurity were location, age, occupation, and income level (Table 5). Household size was not found to be significantly associated to experience of food insecurity. The associations between food insecurity and location can be

explained in various ways. Firstly, the disruptions to food supply chains which reduce access to food has been suggested to increase food insecurity [13]. This is particularly so with urban food systems where there are limited agricultural spaces. Amare et al., 2020 [14] presented evidence in Nigerian households to support the fact that areas with higher infection rates (and full lockdown restrictions) experienced high food insecurity. Age was significantly associated with experience of food insecurity (p = 0.003), which was most experienced by respondents aged 21 - 30 years. A similar observation has been reported in literature [15] [16] but it is unclear if the experience of Nigerian respondents is caused by the inability to earn during lockdown or the inability to be thrifty with available resources.

As regards occupation, food insecurity (p = 0.014) was high in households where the respondent’s source of income was artisanship or personal business under the skilled manual category. This implies that respondents who usually relied on day-to-day business activities were most affected since about 91% of respondents claimed to be staying at home and unable to go to work. This is further explained by the relationship observed between monthly income and experience of food insecurity (p = 0.000). The association of food insecurity with income levels seems straightforward to explain since higher income levels will definitely suggest some means of adjustability to the lockdown situation. Also, since most of the respondents depended on a monthly salary as their main income source, it is logical to assume that disruptions to flow of income was a major factor in determining economic access to food and by extension the experience of food insecurity (or otherwise). This assertion is mirrored in literature presented in the earliest and recent waves of COVID-19 [16] [17]. An old and recent assessment carried out on expenditure patterns of American households (during and after lockdown restrictions) asserts likewise [10] [12]. A study of Ethiopian households shows that higher income earners who relied on savings were able to circumnavigate any shocks on their household food expenditure [9].