Table 1.
Descriptive statistics of general characteristics of subjects

Variable	N	Mean	Standard deviation	Min	Max
Age	654	51.39	10.01	24	76
Household size (no. of members)	654	3.10	1.17	1	6
Online grocery purchase amount	507	913,248	1,893,455	4,000	18,386,536
Offline grocery purchase amount	654	11,818,255	6,287,158	1,149,880	62,369,832
Employment status of housewife	654		Unemployed housewife (1): n=286 Employed housewife (0): n=368

Online grocery purchase amount: The amount of online grocery expenditure for 3 years.
Offline grocery purchase amount: The amount of offline grocery expenditure for 3 years.