'appeared significant' is correct and usable in written English.
You can use it when you want to describe something that is important or has a certain degree of importance. For example, "The results of the study appeared significant, suggesting a link between the two variables."
Variables that appeared significant at a relaxed significance level of α = 0.2, were entered into a multivariable Poisson regression model.
In addition to these variables, Caucasian ethnicity, age and family history of superficial venous events appeared significant in the limited (age sex) adjustment model, but lost significance on multivariable analysis.
[Page A7.] What appeared significant was that the muscular military campaign to uproot, arrest or kill the remnants of guerrilla fighters loyal to Saddam Hussein, who remains unaccounted for, has caused civilian casualties and is inflaming sentiments among the Iraqis.
After three decades of a freeze in American-Iranian relations, it appeared significant that Mr. Obama directed his comments not just to the Iranian people but to Iran's leaders, and that he referred to Iran as "the Islamic Republic," apparently indicating a willingness to deal with the current clerical government.
Yet, edge density within also 2.0 km appeared significant (Table 2).
In contrast to the slow 'creep' of disease, for some, the implications of an uncertain illness trajectory, particularly the risk of sudden decline, appeared significant.
The timing of the meetings appears significant.
Italy's cultural ministry said: "After an initial survey, damage to cultural patrimony appears significant".
If there are stages in his career that in retrospect appear significant, 2014 may become another for Mark Wigglesworth.
This may not appear significant, but the value of these assets can run into millions of pounds.
When so many variables are in question, he explained, it is quite likely that chance alone will cause a few of them to appear significant.
