From: Changes in undergraduate student alcohol consumption as they progress through university
 | Longitudinal | Cross-sectional | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | Total | Male | Female |  |  | Total | Male | Female |  |  | ||||||
 | M | SD | M | SD | M | SD | t | df | M | SD | M | SD | M | SD | t | df |
Year 1 | 19.11 | 13.94 | 24.69 | 15.60 | 16.03 | 11.91 | -3.38* | 223 | 18.94 | 14.45 | 24.04 | 16.16 | 15.49 | 11.89 | -12.22* | 2097a |
Year 2 | 15.49 | 12.53 | 20.21 | 12.97 | 12.89 | 11.52 | -3.80* | 223 | 16.06 | 13.36 | 21.09 | 15.60 | 12.65 | 10.09 | -10.56* | 1420a |
Year 3 | 12.62 | 9.99 | 16.34 | 12.14 | 10.57 | 7.91 | -2.72* | 128a | 13.89 | 12.52 | 18.42 | 14.17 | 10.71 | 9.79 | -10.88* | 1296a |