Table 3.
Year | Male | Female | Total | ||||||||||||
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No. | Mean | SD | t | p | No. | Mean | SD | t | p | No. | Mean | SD | t | p | |
2006 | 47 | -0.63 | 0.54 | -8.12 | <0.01 | 42 | -0.4 | 0.44 | -5.96 | <0.01 | 89 | -0.53 | 0.50 | -9.86 | <0.01 |
2009 | 76 | -0.58 | 0.49 | -10.26 | <0.01 | 33 | -0.7 | 0.59 | -6.86 | <0.01 | 109 | -0.62 | 0.52 | -12.31 | <0.01 |
SD: Standard deviation.