我有一个患者数据集及其随时间(以年为单位)与酒精相关的患者数据,如下所示
clear
input long patid float(year cohort)
1051 1994 1
2051 1972 1
2051 1989 2
2051 1990 2
2051 2000 2
2051 2001 3
2051 2002 1
2051 2003 2
8051 1995 1
8051 1996 1
8051 2003 1
end
label values cohort cohortlab
label define cohortlab 0 "general population" 1 "no alcohol data" 2 "indeterminate" 3 "non-drinker" 4 "low_risk" 5 "hazardous" 6 "AUD" , replace
我想创建一个变量,显示迄今为止在患者记录中任何(年)点使用的最高酒精含量代码,使得数据集如下所示:
clear
input long patid float(year cohort highestsofar)
1051 1994 1 1
2051 1972 1 1
2051 1989 2 2
2051 1990 2 2
2051 2000 2 2
2051 2001 3 3
2051 2002 1 3
2051 2003 2 3
8051 1995 1 1
8051 1996 1 1
8051 2003 1 1
end
label values cohort cohortlab
label values highestsofar cohortlab
label define cohortlab 0 "general population" 1 "no alcohol data" 2 "indeterminate" 3 "lifetime_abstainer" 4 "low_risk" 5 "hazardous" 6 "AUD" , replace
感谢您提供清晰的示例和问题。
常见问题解答已涵盖该问题链接在这里在 StataCorp 网站上。这是一个单行解决方案,使用rangestat
来自SSC。
clear
input long patid float(year cohort)
1051 1994 1
2051 1972 1
2051 1989 2
2051 1990 2
2051 2000 2
2051 2001 3
2051 2002 1
2051 2003 2
8051 1995 1
8051 1996 1
8051 2003 1
end
label values cohort cohortlab
label define cohortlab 0 "general population" 1 "no alcohol data" 2 "indeterminate" 3 "non-drinker" 4 "low_risk" 5 "hazardous" 6 "AUD" , replace
rangestat (max) highestsofar = cohort, interval(year . 0) by(patid)
list, sepby(patid)
+-------------------------------------------+
| patid year cohort highes~r |
|-------------------------------------------|
1. | 1051 1994 no alcohol data 1 |
|-------------------------------------------|
2. | 2051 1972 no alcohol data 1 |
3. | 2051 1989 indeterminate 2 |
4. | 2051 1990 indeterminate 2 |
5. | 2051 2000 indeterminate 2 |
6. | 2051 2001 non-drinker 3 |
7. | 2051 2002 no alcohol data 3 |
8. | 2051 2003 indeterminate 3 |
|-------------------------------------------|
9. | 8051 1995 no alcohol data 1 |
10. | 8051 1996 no alcohol data 1 |
11. | 8051 2003 no alcohol data 1 |
+-------------------------------------------+
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