The phrase "although this shows" is correct and usable in written English.
It can be used to introduce a contrasting idea or to acknowledge a point while suggesting that there is more to consider.
Example: "Although this shows a significant improvement in performance, we still need to address the underlying issues."
Alternatives: "even though this indicates" or "while this demonstrates".
Although this shows a decline from the earlier peak, it shows investors are hoping a change at the top can revitalise the flagging business.
Although this shows that the lending banks in the UK and Germany were really stupid I expect the bankers who lent these sums received huge bonuses on top of their huge salaries and will retire on huge pensions.
Although this shows great drive and dedication, it can also set an unhealthy standard and your managers might come to expect you to stay late always since you did it early on.
Although this shows that expression of Vp-PAI genes is required for induction of fluid accumulation in the intestine, the environmental and/or host-derived factors that trigger the expression of these genes remain unknown.
Although this shows the highest possible gain, the queries COSARA UrineSediment and Identification are disabled completely.
Although this shows that both grey and white matter were affected to a similar degree, lesion maxima were located subcortically.
Although this show has its share of clichés, Mr. Ickovic brings a warm, fresh energy to his work.
Although this show isn't a documentary, it depicts its subject matter with enough accuracy and in a much more compelling manner than any study.
Although this show is a single, long-form piece, the cast are quick to defend the skill, pace and lightning wit displayed in quickfire impro.
But although this show still thrives, it is an illustration of how live comedy - at the Store and in general - has changed.
Their brand of punk wasn't cheap, although this show demonstrates that they also excelled at unsettling or politically charged T-shirts.
