The phrase "although not substantial" is correct and usable in written English.
It can be used to indicate that something exists or is present, but its significance or impact is minimal.
Example: "The findings of the study were interesting, although not substantial enough to change current practices."
Alternatives: "even if minor" or "despite being limited".
"Banning the service will bring some losses to Google, although not substantial.
Although not substantial, male gender may also be a predictor of mortality.
The region, insurance coverage and female-headed household variables seem to have inequality reducing effect, although not substantial.
The variables: region, insurance coverage and female-headed household seem to have inequality reducing effect, although not substantial.
Although not substantial, it is suggestive of a more rapid increase in ATP derived from oxidative phosphorylation [ 8- 11, 26].
Although not substantial, when compared to most other fungi, it is noted that L. rhinocerotis has 33 genes engaged in "Metabolism of xenobiotics by cytochrome P450" and 36 in "Drug metabolism - cytochrome P450" KEGG sub-pathways (Table 2), respectively.
Univariate analysis showed a significant association of NRT thresholds with squared distance (P = 0.02) and a substantial although not significant association with squared impedance (P = 0.09).
This limitation is coupled with an evidence base that relies primarily on retrospective study designs that have a greater potential for selection bias, and substantial (although not significant) heterogeneity of effect sizes reported in studies.
The domains supportive care and common drugs in NN showed a decline in the absolute mean difference although this was not substantial.
"This trade, although large, is certainly not substantial enough to cause a problem in the context of our capital".
"This trade, although large, is certainly not substantial enough to cause a problem in the context of our capital," Mr. Zames added.
