Thanks, MJ., this is very interesting!

Anglican, Anglican/Episcopalian, Episcopalian, Catholic, Pentecostal, and Presbyterian have grown and now have sizable shares.

Reformed has kept it's share.

Evangelical, Fundamentalist, Lutheran and Puritan have shrunk considerably.

Methodist and Orthodox have grown but are still small.

Other than that no change in the shares of groups and/or too small share to see in the chart.

It's generally beginning to look a bit diversified. But it will also make some less satisfied. And which groups have a good quality/affordability ratio and how that relates to the demand is hard to tell.

I wonder which group the now withdrawn Moody products were and whether that made any noticeable difference?

Logos is attempting to label more products, but I think that will take some time to do and I don't know how much they are going to go through the library and re-label "old" products or whether that will only be based on customers reporting errors. Labelling new resources seems like the easiest part.

Some of the change is probably new categories, I think Episcopalian wasn't there at first, right? Or how would You explain the substantial change?

They have a small share that has grown a little between Pentecostal and Presbyterian at the left:

Bruce Dunning said:

I had no idea that Plymouth Brethren resources were so dominate in the past and even today carry such a huge percentage. Is someone able to say why this is the case?

It's btw hard to tell which one is bigger: Anabaptist or Seventh-Day Adventist, both have the same colour and are next to each other at the top.

Yeah, I know, some groups have the same colour. The largest group You are seeing is the Evangelical at the bottom:

Bruce Dunning said:

The color code is hard to see because it is so small even when it is blown up but it looks to me like the Plymouth Brethren was and is the largest category. Am I not reading this right?

The groups are organized alphabetically clockwise in the chart, starting at the top.

Ah. Thank you. 

Thanks, MJ. Any chance for absolute numbers rather than percentages?

Bruce Dunning said:

M.J. is this data publicly available? How did you get it?

In the left column of the product page is a heading marked "Christian Group". That's where the data comes from. MJ will have compared it with an archive of that page (like this). I'm not sure exactly what date she picked, but on the basis of the one I selected, it says in the last two years evangelical resources have risen from 1660 to 1766 (+106), whereas Catholic resources have gone from 75 to 476 (+401).

M.J. - Thank you. I am continually impressed with the depth of your knowledge and quality posts. You are an asset and a blessing to Logos users!

This is really cool information.

Jerry

The largest group of resources is not represented in the graph. Secular works like William James and much of the Perseus catalogue do not lend themselves to denominational tagging.

Unix said:

Anglican, Anglican/Episcopalian, Episcopalian, Catholic, Pentecostal, and Presbyterian have grown and now have sizable shares.

The Anglican and Episcopalian growth is mostly fake. The books were there two years ago as well, but until Ben started working this spring, the Anglican tagging was so nearly non-existant that not even the BCP (or NT Wright) was tagged as Anglican. Plus nearly every Anglican book gets tagged as both Anglican, Episcopalian and Anglican/Episcopalian, so the market share now gets blown out of proportion instead.

I would imagine the Pentecostal and Presbyterian growth is also partly or mainly due to improved tagging. I would also imagine there's a huge overlap between Presbyterian, Reformed and Evangelical, and between Pentecostal and other groups.

The Catholic share is another matter: a) July 2011 Andrew should have already finished his initial retagging of existing resources, b) there probably isn't much overlap with other groups, and c) one needs to remember that most books are first published in collections. Loads of Evangelical collections that counted as one resource each in 2011 will now have been broken up and count as 15 or 27, while most Catholic collections haven't been broken up yet. So I would imagine the Catholic growth and share is underestimated rather than overestimated.

Though on the other hand a disproportionate share of the Catholic resources are still on CP or prepub, and not actually available (unless MJ filtered by 'Live'). And the Catholics get to claim all the Patristic and Medieval writers.[:D]

Plus there must still be loads of resources with a denominational bent that haven't been tagged at all yet, and most of them will be some flavour of Evangelical.

Unix said:

Evangelical, Fundamentalist, Lutheran and Puritan have shrunk considerably.

Only in relative terms. I would assume they still have more books in Logos now than they had then.

Mark Barnes said:

MJ will have compared it with an archive of that page (like this). I'm not sure exactly what date she picked

She's published charts like these before. She probably reused one of her old ones.

MJ, Reformed, Seventh-day Adventist, and Anabaptist are next to each other, and they all have the exact same colour...