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st: reshape to keep single age range and multiple years


From   Tim Evans <Tim.Evans@wmciu.nhs.uk>
To   "'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu>
Subject   st: reshape to keep single age range and multiple years
Date   Thu, 22 Nov 2012 17:16:07 +0000

Hi all,

I'm using Stata 11.2 and I've collapsed an individual data set so that I have year, counts of tumours and age at diagnosis. I have multiple years of diagnosis, with single year of age starting from 16 - 100+.

The data look like this:

id	yydx	count	age_at_diag
1	1998	1	22
2	1998	1	25
3	1998	2	26
4	1998	4	27
5	1998	2	29
6	1998	1	31
7	1998	2	32
8	1998	1	33
9	1998	1	35
10	1998	2	36
11	1998	3	37
12	1998	1	38
13	1998	9	39
14	1998	4	40
15	1998	6	41
16	1998	8	42
17	1998	5	43
18	1998	8	44
19	1998	10	45
20	1998	10	46
21	1998	20	47
22	1998	23	48
23	1998	17	49
24	1998	25	50
25	1998	31	51
26	1998	26	52
27	1998	37	53


The data continue so that yydx continues until 2010.

What I would like to do and am having trouble doing, is reshape the data so that I have year running down the dataset and age at diag running across the data set like thus

	16	17	18	19 and so on	
1999 5	0    14
1999	1	2	21
2000	3	1	19

Does anyone have any suggestions please?

Best wishes

Tim



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