Table 1 Variables of double logarithmic regression and ARIMA analysis

Variable	Unit analysis	Definition	Source	Code
Consumer rice price	Rp/kg	The prevailing cost paid by end consumers in the market for medium qualityof rice.	National Food Agency	CRP
Government Purchase Price (GPP)	Rp/kg	The specific amount disbursed by the government to procure unhulled rice or to designate rice as part of the government’s reserves.	Cabinet Secretariat of The Republic of Indonesia and The Indonesian Ministry of Trade	GPP
Market operations	kg/mon	The various preventive measures undertaken by the government to maintain stability in rice prices through Food Availability and Supply Stabilization Program (FSAPS).	BULOG	MO
Central Government Rice Reserve (CGRR)	kg/mon	The operational inventory of rice under the authority of the government (BULOG), serving the larger goal of achieving national food security.	BULOG	CGRR
Rice import	kg/mon	The quantity of medium-quality rice acquired by the government to supplement domestic rice reserves during periods of insufficient domestic production.	BULOG	RI

Note: ARIMA, Autoregressive Integrated Moving Average; CRP, Consumer Rice Prices; MO, Market Operations; RI, Rice Import.