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Table 3 Independent t-test comparing the combined mean of 2003 and 2004 vs. 2006

From: In-process modification yields improved teaching outcomes for international emergency medicine

   Levene’s test for equality of variances t-test for equality of means
   F Sig. t df Sig. (two-tailed) Mean difference Std. error difference 95% Confidence interval of the difference
          Lower Upper
Was the acadmic content valuable? Equal variances assumed 0.025 0.874 1.458 229 0.146 0.14773 0.101293 −0.051857 0.347315
Equal variances not assumed 1.229 91.326 0.222 0.14773 0.120162 −0.90946 0.386405
Was the class intruction excellent? Equal variances assumed 0.093 0.760 2.427 226 0.016 0.25916 0.106764 0.048781 0.469543
Equal variances not assumed 2.120 96.727 0.037 0.25916 0.122271 0.016479 0.501844
Were the instructors accessible? Equal variances assumed 0.690 0.407 1.693 230 0.092 0.18100 0.106915 −0.029659 0.391655
Equal variances not assumed 1.410 89.662 0.162 0.18100 0.128394 0.074091 0.436088
Did the instructors treat students fairly? Equal variances assumed 12.235 0.001 4.399 231 0.000 0.41569 0.094501 0.229497 0.601884
Equal variances not assumed 4.273 117.524 0.000 0.41569 0.097274 0.223053 0.608328
Did the instructors care about you as an individual? Equal variances assumed 5.156 0.024 3.665 232 0.000 0.49029 0.133782 0.226711 0.753878
Equal variances not assumed 3.155 94.321 0.002 0.49029 0.155412 0.181733 0.798856
Would you attend the program again? Equal variances assumed 79.473 0.000 4.450 229 0.000 0.38659 0.086866 0.215430 0.557746
Equal variances not assumed 6.131 227.383 0.000 0.38659 0.063058 0.262335 0.510841
Did your experiences meet your expectations? Equal variances assumed 17.911 0.000 −.309 231 0.758 −0.03960 0.128265 −0.292317 0.213122
Equal variances not assumed −.240 81.528 0.811 −0.03960 0.165201 −0.368263 0.289068
Could the instructor adequately answer questions? Equal variances assumed 0.090 0.764 2.298 225 0.022 0.24215 0.105380 0.034488 0.449804
Equal variances not assumed 1.958 92.864 0.053 0.24215 0.123682 −0.003467 0.487759