Turn on suggestions

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

- Home
- /
- Programming
- /
- SAS Procedures
- /
- PROC REPORT cumulative counts

Options

- RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Mute
- Printer Friendly Page

- Mark as New
- Bookmark
- Subscribe
- Mute
- RSS Feed
- Permalink
- Report Inappropriate Content

Posted 05-16-2019 10:48 PM
(674 views)

I am trying to do a running total of 'n' in a PROC REPORT. I can easily get 'n' and '%' like this:

Category | Item | N | % |

A | 1 | 100 | 4.76% |

2 | 200 | 9.52% | |

3 | 300 | 14.29% | |

B | 1 | 400 | 19.05% |

2 | 500 | 23.81% | |

3 | 600 | 28.57% | |

2100 | 100.00% |

But I want to get cumulative 'n' and '%' within each category like this:

Category | Item | Cum N | Cum % |

A | 1 | 100 | 16.67% |

2 | 300 | 50.00% | |

3 | 600 | 100.00% | |

B | 1 | 400 | 26.67% |

2 | 900 | 60.00% | |

3 | 1500 | 100.00% |

I have found several papers/references on cumulative totals and percents, but they all use one of the dataset variables. SAS doesn't recognize the 'n' statistic in a compute block. I have tried doing counts in a compute block - 'cnt+1;' - but didn't work. I could do the counts in a data step, but I would rather do it in the procedure. Any suggestions?

Thanks...

Jim A.

3 REPLIES 3

- Mark as New
- Bookmark
- Subscribe
- Mute
- RSS Feed
- Permalink
- Report Inappropriate Content

Hi:

SAS does recognize the N statistic in a COMPUTE block, but you need to use it properly. Perhaps using a temporary variable will help. But to compute a percent and/or a cum percent, you're going to need to understand what is the denominator for the division.

I'm curious though why you don't use PROC FREQ to get the cum frequency and cum percent, create an output dataset from FREQ and then use PROC REPORT to arrange the output from FREQ.

You don't show any data or PROC REPORT code. Can you post a sample dataset or re-create the report using SASHELP.CLASS or SASHELP.SHOES??

Cynthia

SAS does recognize the N statistic in a COMPUTE block, but you need to use it properly. Perhaps using a temporary variable will help. But to compute a percent and/or a cum percent, you're going to need to understand what is the denominator for the division.

I'm curious though why you don't use PROC FREQ to get the cum frequency and cum percent, create an output dataset from FREQ and then use PROC REPORT to arrange the output from FREQ.

You don't show any data or PROC REPORT code. Can you post a sample dataset or re-create the report using SASHELP.CLASS or SASHELP.SHOES??

Cynthia

- Mark as New
- Bookmark
- Subscribe
- Mute
- RSS Feed
- Permalink
- Report Inappropriate Content

Agreeing with @Cynthia_sas, it would be very easy to compute the cumulative counts before you run PROC REPORT in a PROC or data step, and then run PROC REPORT on this.

--

Paige Miller

Paige Miller

- Mark as New
- Bookmark
- Subscribe
- Mute
- RSS Feed
- Permalink
- Report Inappropriate Content

Hi:

Well, either use the PROC FREQ numbers or use a DATA step or get them from TABULATE.

But I did not mean to imply that you can't do cumulative N or cumulative percent with PROC REPORT. It is totally possible. See below:

For percent of the group, as the original question showed, a slightly more complex compute block is needed. There's a LONG discussion of percents and percents of groups starting with Example 4 on page 22 of this paper: https://support.sas.com/resources/papers/proceedings17/SAS0431-2017.pdf .

For SASHELP.SHOES, it is possible to do cum count and cumpercent of group using a slightly different logic, as shown below:

You could always calculate the numbers in a DATA step program, but that frequently means two passes through the data, which is OK if it makes maintenance easier. But PROC REPORT can do the CUM count and CUM percent too.

Hope this helps,

Cynthia

**Don't miss out on SAS Innovate - Register now for the FREE Livestream!**

Can't make it to Vegas? No problem! Watch our general sessions LIVE or on-demand starting April 17th. Hear from SAS execs, best-selling author Adam Grant, Hot Ones host Sean Evans, top tech journalist Kara Swisher, AI expert Cassie Kozyrkov, and the mind-blowing dance crew iLuminate! Plus, get access to over 20 breakout sessions.

What is Bayesian Analysis?

Learn the difference between classical and Bayesian statistical approaches and see a few PROC examples to perform Bayesian analysis in this video.

Find more tutorials on the SAS Users YouTube channel.