Table 1. Descriptive statistics of the whole sample and each survey year.
| Variables | Overall | 2019 | 2020 | 2021 | |
|---|---|---|---|---|---|
| Purchase amounts of meal kits1) | 0.182 ± 2.140 | 0.082 ± 1.138 | 0.174 ± 2.175 | 0.301 ± 2.824 | |
| Purchase amounts of HMR1) | 25.808 ± 30.464 | 23.585 ± 27.963 | 25.657 ± 31.346 | 28.393 ± 31.874 | |
| Purchase amounts of RTE1) | 2.978 ± 8.165 | 2.481 ± 7.278 | 2.566 ± 7.794 | 3.971 ± 9.308 | |
| Purchase amounts of RTP1) | 0.576 ± 3.043 | 0.340 ± 2.136 | 0.613 ± 3.236 | 0.790 ± 3.599 | |
| Purchase amounts of RTH1) | 8.606 ± 14.268 | 8.733 ± 14.200 | 8.677 ± 14.651 | 8.389 ± 13.913 | |
| Purchase amounts of RTC1) | 13.648 ± 18.047 | 12.031 ± 16.413 | 13.801 ± 18.251 | 15.243 ± 19.330 | |
| Age2) | 55.293 ± 10.095 | 55.298 ± 10.074 | 55.288 ± 10.107 | 55.293 ± 10.106 | |
| Household size | 2.896 ± 1.171 | 2.898 ± 1.170 | 2.896 ± 1.171 | 2.896 ± 1.171 | |
| Household income1) | 501.189 ± 282.805 | 501.331 ± 282.838 | 501.115 ± 282.799 | 501.115 ± 282.800 | |
| Perceived importance of quality3) | 54.737 ± 12.983 | 54.745 ± 12.983 | 54.733 ± 12.983 | 54.733 ± 12.983 | |
| Child | |||||
| Has child | 15,470 (40.378) | 5,304 (40.402) | 5,304 (40.365) | 4,862 (40.365) | |
| No child | 22,843 (59.622) | 7,824 (59.598) | 7,836 (59.635) | 7,183 (59.635) | |
| Wife’s occupation | |||||
| Employed | 14,140 (36.907) | 4,848 (36.929) | 4,848 (36.895) | 4,444 (36.895) | |
| Unemployed | 24,173 (63.093) | 8,280 (63.071) | 8,292 (63.105) | 7,601 (63.105) | |
| Residence | |||||
| Metropolitan | 16,753 (43.727) | 5,736 (43.693) | 5,748 (43.744) | 5,269 (43.744) | |
| Non-metropolitan | 21,560 (56.273) | 7,392 (56.307) | 7,392 (56.256) | 6,776 (56.256) | |
| Observations | 38,313 | 13,128 | 13,140 | 12,045 | |
Values for continuous variables are presented as mean ± SD. Values for categorical variables are presented as frequency (percentage).
HMR, home meal replacement; RTE, ready-to-eat; RTP, ready-to-prepare; RTH, ready-to-heat; RTC, ready-to-cook.
1)Unit of purchase amounts and household income: 10,000 KRW.
2)Unit of age: year.
3)Perceived importance of quality was measured using a scale ranging from 0 to 100.