The sample size was also 31 users, 40 controls. This really isn't a meaningful result.
At these kinds of sample sizes, the biggest issues are not going to be included or visible in the study. Unless the reported significance is extremely high, it's not meaningful.
Is there a way for researchers to publish 'interesting observations' as just that, something that they measured that may or may not be noteworthy but felt worth sharing with the broader community?