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发帖数: 286 | 4
Yes, binary outcome, have item( value as 1) or no item(value as 0), if have
item, then the amount is no-zero, so 14 items, each has item and item_amount
, so total 28 variables. Most of them are zero.
collected data three times every other week. one of data as following:
ID item1 item1_amount item2 item2_amount ........item14 item14_amount
001 1 5 0 0 0 0
002 0 0 0 0 1 21
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010 1 2 1 ... 阅读全帖 |
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