Table 4 Differences in substitute food shopping experience by age Unit: %, People

Classification		No	Yes	Number of respondents	Chi-square test p-value
Age	2-30s	71.0	29.0	424	0.076*
	40s	76.7	23.3	262
	5-60s	77.0	23.0	514

Note: *** at 1% significance level, ** at 5% significance level, *** at 10% significance level