Prevalence of household food insecurity and its association with food waste.

BACKGROUND: Household food waste significantly contributes to overall food waste. While the relationship between food security and food waste has been extensively studied at the macro level, there is a need for research focusing on the quantitative association between food security and food waste at the household level in developing countries, particularly in Southeast Asia. This study aims to estimate the prevalence of household food insecurity and household food waste and to examine the association between household food security and food waste using direct measurements. SUBJECTS AND METHODS: A total of 215 households in Bogor Regency, Indonesia, participated in this cross-sectional study. Food waste was measured using waste composition analysis and a 7-day diary. The Food Insecurity Experience Scale (FIES) questionnaire was used to assess household food security, while household income and the proportion of food expenditure were considered confounding factors. The association between food security and food waste was examined using Kendall tau-b and ordinal logistic regression. RESULTS: The prevalence of household food insecurity was 18.6%, and the average household food waste was 77 kg/cap/year. Cereals, tubers, and their derivatives (especially rice) and vegetables were major contributors to edible waste, while fruits dominated inedible waste. A negative association was observed between food waste and household food security (edible FW: p = 0.044, r = -0.110; total FW: p = 0.038, r = -0.114), suggesting that household food waste decreases as the severity of food insecurity increases. However, after adjusting for household income, the proportion of food expenditure, and the education levels of spouses, this association became statistically insignificant (p > 0.05). CONCLUSION: There was no significant association between household food security status and food waste. Household income plays a significant role in determining the quantity of household food waste, as higher income is associated with increased food waste. Strategies to prevent and reduce food waste should focus on major contributors such as rice and vegetables, especially among families with higher food accessibility.

The quantity and composition of household food waste: Implications for policy.

Studies on food waste in Southeast Asia are currently limited, with a notable absence of comparative analyses investigating the volume and composition of food waste in urban and rural areas through direct measurement. This study aimed to analyze the differences in the quantity, composition, and drivers of household food waste between urban and rural areas. Household food waste was assessed through waste compositional analysis for food and diaries for beverages. This cross-sectional study included 215 households in Bogor Regency, Indonesia. Comparisons between the two areas were performed using an independent t-test. The average of household food waste in Bogor Regency was 77 kg/cap/year (edible 37.7%, inedible 62.3%). Household food waste was higher in urban areas (79.4 kg/cap/year) than in rural areas (45.8 kg/cap/year) (p<0.001). Cereals, tubers and their derivatives (especially rice) and vegetables were the major contributors to edible food waste, whereas fruits were the main contributors to inedible food waste in both areas. Food waste drivers were spoilage/staleness/moldiness, changes in texture, short shelf life, cooking too much, and plate leftovers. Households in urban areas had a higher quantity of food waste and disposed of more edible food than those in rural areas. Meanwhile, the drivers of food waste generation were similar in both areas. Understanding the quantity, composition, and drivers of household food waste is pivotal for developing effective awareness campaigns and fostering behavioral changes to prevent household food waste.

Development and validation of a social impact questionnaire for household food waste.

This exploratory study was conducted to develop and validate an instrument for measuring the social impact of food waste at the household level. A mixed methodology was employed, commencing with a qualitative approach through in-depth interviews and focus group discussions, to identify the social impact of food waste at the household level. This was followed by a quantitative assessment of the questionnaire's validity and reliability. The process involved seven experts for content validity testing, 150 households for face validity testing, and 202 households for reliability testing. The content validity revealed an I-CVI 0.86-1 and a kappa statistic 0.85-1. The face validity demonstrated I-FVI ≥ 0.90 and S-FVI ≥ 0.95. Additionally, the Cronbach's alpha for the reliability test was 0.743. The questionnaire proved to be a simple, valid, and reliable instrument for measuring the social impact of household food waste. •Mixed method used in developing and validating the questionnaire.•Content validity, face validity, and reliability testing to evaluate a newly developed instrument.