Table 1.
Profile of participants overall and across years of the study
| Variables | Overall | 2009 | 2010 | 2011 | 2012 | p-value | p-trend |
|---|---|---|---|---|---|---|---|
| N (%) | 2726 (100) | 559 (20.5) | 469 (17.2) | 690 (25.3) | 1008 (37.0) | ||
| Men, n (%) | 1893 (69.4) | 389 (69.6) | 300 (64.0) | 504 (73.0) | 700 (69.4) | 0.013 | 0.383 |
| Mean age, years | 21.8 (2.4) | 21.8 (2.4) | 21.7 (2.4) | 21.9 (2.5) | 21.7 (2.4) | 0.271 | 0.850 |
| Pulse, beats per min | 77 (13) | 76 (13) | 79 (13) | 75 (13) | 77 (14) | <0.0001 | 0.314 |
| Weight, kg | 67.8 (10.6) | 67.1 (10.2) | 67.0 (10.9) | 67.6 (10.0) | 68.7 (10.9) | 0.177 | 0.005 |
| Height, cm | 171 (9) | 171 (9) | 171 (9) | 171 (8) | 171 (9) | 0.687 | 0.232 |
| Hip circumference, cm | 96 (7) | 96 (9) | 96 (8) | 94 (7) | 96 (8) | <0.0001 | <0.0001 |
| Men | |||||||
| N (%) | 1893 (100) | 389 (20.6) | 300 (15.9) | 504 (26.6) | 700 (36.9) | ||
| Mean age, years | 21.9 (2.5) | 22.0 (2.5) | 21.9 (2.5) | 22.1 (2.6) | 21.8 (2.4) | 0.166 | 0.420 |
| Pulse, beats per min | 74 (13) | 74 (12) | 77 (13) | 73 (12) | 74 (13) | 0.0004 | 0.355 |
| Weight, kg | 69.8 (9.4) | 68.6 (8.9) | 69.9 (9.7) | 69.3 (9.3) | 70.7 (9.6) | 0.002 | 0.288 |
| Height, cm | 174.4 (7.0) | 174 (7) | 175 (7) | 174.2 (6.6) | 174.5 (7.0) | 0.130 | 0.618 |
| Hip circumference, cm | 94.4 (6.9) | 94.5 (7.5) | 95.4 (6.6) | 93.2 (5.9) | 94.8 (7.1) | <0.0001 | 0.004 |
| Women | |||||||
| N (%) | 833 (100) | 170 (20.4) | 169 (20.3) | 186 (22.3) | 308 (37.0) | ||
| Mean age, years | 21.4 (2.3) | 21.6 (2.3) | 21.4 (2.0) | 21.3 (2.1) | 21.4 (2.5) | 0.626 | 0.186 |
| Pulse, beats per min | 83 (13) | 82 (12) | 83 (12) | 82 (14) | 85 (13) | 0.098 | 0.818 |
| Weight, kg | 63.4 (11.7) | 63.6 (12.1) | 61.9 (11.1) | 63.2 (10.4) | 64.2 (12.4) | 0.236 | 0.767 |
| Height, cm | 163.7 (7.2) | 163.7 (7.2) | 163.9 (6.0) | 164.0 (7.2) | 163.3 (7.7) | 0.773 | 0.769 |
| Hip circumference, cm | 98.8 (9.4) | 100.6 (9.9) | 98.3 (9.0) | 97.6 (8.2) | 98.8 (10.0) | 0.018 | 0.002 |