Determinants of potato consumption as a carbohydrate source in East Java, Indonesia: A household-level analysis

Diversification of food sources is crucial for enhancing national food security. Potatoes are an accessible source of carbohydrates for households; nevertheless, their prices frequently exhibit significant volatility. This study aims to examine the determinants affecting the demand for potatoes. The study was performed in East Java Province, utilizing secondary data from the Central Bureau of Statistics, namely the National Socioeconomic Survey (SUSENAS) for 2023. The study's sample size included 32,454 households. The data analysis employs a Multiple Linear Regression. The research findings indicate that the primary carbohydrate source for households is rice (78.5%), followed by wheat flour (36.7%) and subsequently potatoes (25.8%). The prices of potatoes, rice, shelled corn, cassava, and sweet potatoes affect the demand for potatoes. Simultaneously, the prices of sticky rice, wheat flour, sago, taro, and gaplek do not affect the demand for potatoes. Household income exerts a positive and significant influence on potato demand. The quantity of household members does not influence the demand for potatoes. Substitutes for potatoes include rice, cassava, and sweet potato, whilst corn is a complement to potatoes. This study's findings indicate that households in East Java utilize potatoes as a carbohydrate source alongside rice, particularly as household income rises.