Table 2. Demographic information of 2,275 Australian-resident divers; BMI – body mass index; * 25 < BMI < 30 kg·m⁻²; ** BMI ≥ 30 kg·m⁻²; † comparison made of relative fitness levels reported between groups, n.s. – not significant .
| DAN Members | PADI Members | PADI Divers | P-value | |
| Age (y) mean (SD) | ||||
| All | 50 (12) | 44 (12) | 38 (13) | <0.001 |
| Males | 51 (11) | 45 (12) | 40 (13) | <0.001 |
| Females | 46 (9) | 41 (11) | 35 (12) | <0.001 |
| Gender n (%) | ||||
| Male | 79 (71) | 244 (70) | 470 (58) | <0.001 |
| BMI (kg·m-2) mean (SD) | ||||
| All | 26.9 (4.9) | 26.5 (4.0) | 25.5 (4.3) | <0.001 |
| Males | 27.5 (4.8) | 27.5 (4.9) | 26.5 (4.1) | 0.001 |
| Females | 25.2 (4.8) | 24.4 (3.5) | 24.0 (4.2) | 0.004 |
| Overweight * n (%) | ||||
| All | 490 (44) | 131 (43) | 247 (36) | n.s. |
| Males | 391 (49) | 77 (39) | 181 (44) | n.s. |
| Females | 97 (30) | 32 (36) | 66 (24) | n.s. |
| Obese **n (%) | ||||
| All | 220 (20) | 55 (18) | 94 (14) | n.s. |
| Males | 179 (23) | 57 (29) | 72 (18) | 0.012 |
| Females | 41 (13) | 5 (6) | 22 (8) | n.s. |
| Fitness n (%) | ||||
| very fit | 220 (20) | 55 (18) | 94 (14) | n.s. |
| fit | 73 (7) | 24 (8) | 49 (7) | 0.002† |
| moderately fit | 568 (51) | 124 (39) | 332 (46) | |
| unfit | 69 (6) | 17 (5) | 61 (8) |