TA,
-reshape- does work for you. You simply need to fiddle a bit with the
id variable.
See here:
egen namevisit = group(name visit)
bys name visit (drug) : gen drugID = _n
reshape wide drug, i(namevisit) j(drugID)
gen str drug = drug1 + " " + drug2 + " " + drug3 + " " + drug4
gen GMMT = 0
replace GMMT = 1 if strpos(drug,"A") > 0 & strpos(drug,"C") > 0
replace GMMT = 1 if strpos(drug,"A") > 0 & strpos(drug,"D") > 0
replace GMMT = 1 if strpos(drug,"B") > 0 & strpos(drug,"C") > 0
replace GMMT = 1 if strpos(drug,"A") > 0 & strpos(drug,"B") > 0 &
strpos(drug,"A4") == 0 & strpos(drug,"B3") == 0
replace GMMT = 1 if strpos(drug,"A") > 0 & strpos(drug,"B") > 0 &
strpos(drug,"C") > 0
And the result is
. list name visit drug GMMT
+-----------------------------------+
| name visit drug GMMT |
|-----------------------------------|
1. | Jen 1 B3 C3 D4 1 |
2. | Jen 2 A4 B3 C3 D4 1 |
3. | Jen 3 A4 B3 0 |
4. | Jen 4 A4 B3 C4 1 |
5. | John 1 A1 B1 C1 1 |
|-----------------------------------|
6. | John 2 A1 B1 1 |
7. | John 3 C1 D1 0 |
8. | John 4 B2 C2 D1 1 |
+-----------------------------------+
HTH,
Eva
2009/2/15 TA Stat <[email protected]>:
> If reshape wide is used, that means "visit" is ignored. However, but
> both visit and drug are important in this case. Look at each clinic
> visit of John, he received GMMT at visit 1, visit 2 and visit 3, but
> not visit 4. GMMT can't be determined by one drug, but it is a
> combination of some drugs. In other words, I want to conclude that at
> each visit, each patient received GMMT or not.
>
> I can do Table 2 to Table 3, but not Table 1 to Table 2.
>
> TA
>
>
> On Sun, Feb 15, 2009 at 4:01 AM, Tom Trikalinos <[email protected]> wrote:
>> TA, see
>>
>> help reshape wide
>>
>> in reshaping, j will be your drug
>>
>> hth,
>>
>> TAT
>>
>>
>> On Sat, Feb 14, 2009 at 12:22 AM, TA Stat <[email protected]> wrote:
>>> For example, from table 1 to table 2, create a variable name "GMMT"
>>> with the conditions explain earlier. John received GMMT for visit 1,
>>> visit 2, visit 4, but not visit 3. Jen received GMMT at visit 1,
>>> visit 2, visit 4, but not visit 3.
>>>
>>> Although at visit 4 for Jen, a combination of A4 and B3 is not GMMT,
>>> but she also received C4. So she received GMMT. At visit 3 for John,
>>> he received C1 and D1 (any combination of drug from Class C and Class
>>> D), so he received GMMT.
>>>
>>> I want to know how to get Table 2 from Table 1.
>>>
>>> ***************************************************************************************
>>>
>>> Table 1
>>>
>>> Name Visit Drug
>>>
>>> John 1 A1
>>> John 1 B1
>>> John 1 C1
>>> John 2 A1
>>> John 2 B1
>>> John 3 C1
>>> John 3 D1
>>> John 4 B2
>>> John 4 C2
>>> John 4 D1
>>> Jen 1 B3
>>> Jen 1 C3
>>> Jen 1 D4
>>> Jen 2 A4
>>> Jen 2 B3
>>> Jen 2 C3
>>> Jen 2 D4
>>> Jen 3 A4
>>> Jen 3 B3
>>> Jen 4 A4
>>> Jen 4 B3
>>> Jen 4 C4
>>>
>>> ***************************************************************************************
>>>
>>> Table 2
>>>
>>> Name Visit Drug GMMT (Y=Yes, N=No)
>>>
>>> John 1 A1 Y
>>> John 1 B1 Y
>>> John 1 C1 Y
>>> John 2 A1 Y
>>> John 2 B1 Y
>>> John 3 C1 N
>>> John 3 D1 N
>>> John 4 B2 Y
>>> John 4 C2 Y
>>> John 4 D1 Y
>>> Jen 1 B3 Y
>>> Jen 1 C3 Y
>>> Jen 1 D4 Y
>>> Jen 2 A4 Y
>>> Jen 2 B3 Y
>>> Jen 2 C3 Y
>>> Jen 2 D4 Y
>>> Jen 3 A4 N
>>> Jen 3 B3 N
>>> Jen 4 A4 Y
>>> Jen 4 B3 Y
>>> Jen 4 C4 Y
>>>
>>>
>>> ***************************************************************************************
>>>
>>> Table 3
>>>
>>> Name Visit Drug GMMT (Y=Yes, N=No)
>>>
>>> John 1 A1 Y
>>> John 2 A1 Y
>>> John 3 C1 N
>>> John 4 B2 Y
>>> Jen 1 B3 Y
>>> Jen 2 A4 Y
>>> Jen 3 A4 N
>>> Jen 4 A4 Y
>>>
>>>
>>> On Sat, Feb 14, 2009 at 2:29 AM, Nick Cox <[email protected]> wrote:
>>>> <>
>>>>
>>>> An example of data would help make this clearer.
>>>>
>>>> Nick
>>>> [email protected]
>>>>
>>>> TA Stat
>>>>
>>>> I have data arranged in the format that each row represents one drug
>>>> for clinic visit. So, one patient may have more than one drug (row)
>>>> for each visit. Each patient also have several clinic visits.
>>>>
>>>> There are 4 classes of drugs, called Class A, Class B, Class C and
>>>> Class D. Class A has four drugs, called A1, A2, A3 and A4. Class B has
>>>> 3 drugs, called B1, B2, B3. so as Class C and Class D (as presented
>>>> below). Some combination of drugs is called GMMT, other is not. I
>>>> would like to find if each patient has received GMMT at each clinic
>>>> visit or not. Basically, I want to identify whether patient receive
>>>> GMMT for each visit or not.
>>>>
>>>> Class A: A1, A2, A3, A4
>>>>
>>>> Class B: B1, B2, B3
>>>>
>>>> Class C: C1, C2, C3
>>>>
>>>> Class D: D1, D2, D3, D4
>>>>
>>>> a combination of drug is called GMMT if
>>>>
>>>> Class A and Class B
>>>>
>>>> Class A and Class C
>>>>
>>>> Class A and Class D
>>>>
>>>> Class B and Class C
>>>>
>>>> Class A and Class B and Class C
>>>>
>>>> (However, there are some exception)
>>>>
>>>> but not for Class C and Class D
>>>>
>>>> but not for A4 and B3
>>>>
>>>>
>>>> *
>>>> * For searches and help try:
>>>> * http://www.stata.com/help.cgi?search
>>>> * http://www.stata.com/support/statalist/faq
>>>> * http://www.ats.ucla.edu/stat/stata/
>>>>
>>> *
>>> * For searches and help try:
>>> * http://www.stata.com/help.cgi?search
>>> * http://www.stata.com/support/statalist/faq
>>> * http://www.ats.ucla.edu/stat/stata/
>>>
>> *
>> * For searches and help try:
>> * http://www.stata.com/help.cgi?search
>> * http://www.stata.com/support/statalist/faq
>> * http://www.ats.ucla.edu/stat/stata/
>>
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
