We also conducted t-tests to compare the results for concerns in implementing RFID
from the 2004 study with the 2007 study. The results are reported in Table III. As can be
seen costs, integration and standards were significant at the 5 percent significance level,
whereas security was significant at the 10 percent significance level (all these four
factors were more relevant in 2004 as compared to 2007 –, i.e. companies were more