The phrase "a difference emerged" is correct and usable in written English.
It can be used to indicate that a distinction or variation became apparent over time or through a process.
Example: "As the research progressed, a difference emerged between the two groups in their responses to the treatment."
Alternatives: "a distinction appeared" or "a variation became evident."
Both groups were asked which of four options (patient size, anatomical region, study indication and patient age) would they alter the routine CT scanning parameters, and a difference emerged between the two groups, with 85%% (12/14) of radiologists varying protocols based on all four reasons, while only 30%% of CSRs citing likewise.
A difference emerged between the financial health of the king, and that of the country, although Cromwell's fall undermined much of his bureaucracy, which required his hand to keep order among the many new bodies and prevent profligate spending which strained relations as well as finances.
A difference emerged when we looked at the longer term effects that is, two years of impact of payment by results.
However, a difference emerged in the most common reason for not having one; from difficulties getting a GP to sign forms (2005) to having applied for one but awaiting a response (current study).
However it not clear why such a difference emerged but one explanation is that this group of patients was older than the other group and this may have contributed to the problem.
In cohort A, some difference emerged: receiving lipid-lowering therapy (hazard ratio [HR] 1.32 [95% CI 1.07 1.63]), number of years from first event (1.57, [1.21 2.03] for >6 years), and living in Southern Italy (0.77 [0.62–0.96]) became significant.
When men and women were contrasted in a group comparison, a striking difference emerged in activation to contemptuous faces, which was much stronger in men than in women.
However, when the researchers analyzed the data differently and looked at whether a baby had a greater risk of either dying or developing lung disease, a small difference emerged.
A significance difference emerged between relapse rates in patients who had experienced twelve episodes or less.
A similar difference emerged immediately post-testing (Fisher test, p<0.05).
Between 0 5 min only a slight difference emerged in sham-treated runners (F1,44 = 3.61; p = 0.06).
