Table 3 Summary statistics of the WWMHP and control samples across both phases
Personal variables | Control n (%) | WWMHP n (%) | ||||
|---|---|---|---|---|---|---|
Phase 1 | Phase 2 | p | Phase 1 | Phase 2 | p | |
Sex | ||||||
Male | 425 (87.6) | 379 (92.2) | 0.208 | 841 (87.4) | 544 (87.6) | 0.358 |
Female | 60 (12.4) | 32 (7.8) | 121 (12.6) | 77 (12.4) | ||
Age | ||||||
< 24 | 38 (7.8) | 24 (5.8) | 0.814 | 78 (8.1) | 54 (8.5) | 0.953 |
25–34 | 143 (29.4) | 117 (28.3) | 305 (31.8) | 188 (29.6) | ||
35–44 | 141 (29.0) | 128 (31.0) | 305 (31.8) | 207 (32.6) | ||
45–54 | 124 (25.5) | 108 (26.2) | 207 (21.6) | 139 (21.9) | ||
55+ | 40 (8.2) | 36 (8.7) | 65 (6.8) | 47 (7.4) | ||
Relationship status | ||||||
Not married or de facto | 81 (16.7) | 54 (13.1) | 0.757 | 124 (12.9) | 92 (14.6) | 0.539 |
Married or de facto | 373 (76.7) | 327 (79.4) | 779 (81.2) | 501 (79.3) | ||
Separated/divorced/widowed | 32 (6.6) | 31 (7.5) | 56 (5.8) | 39 (6.2) | ||
Mine type | ||||||
Open cut | 174 (35.7) | 206 (49.9) | 0.039 | 599 (61.8) | 347 (54.5) | 0.242 |
Underground | 314 (64.3) | 207 (50.1) | 370 (38.2) | 290 (45.5) | ||
Mine workers | ||||||
FIFO/DIDO | 303 (62.2) | 342 (83.2) | < 0.001 | 111 (11.5) | 71 (11.2) | 0.370 |
Local | 184 (37.8) | 69 (16.8) | 856 (88.5) | 565 (88.8) | ||
Employment category | ||||||
Manager | 26 (5.3) | 16 (3.9) | < 0.001 | 42 (4.3) | 16 (2.5) | < 0.001 |
Professional | 85 (17.5) | 28 (6.8) | 113 (11.7) | 22 (3.5) | ||
Trades worker | 179 (36.8) | 147 (35.9) | 315 (32.5) | 189 (29.9) | ||
Machinery operator | 155 (31.8) | 192 (46.8) | 452 (46.6) | 384 (60.7) | ||
Admin or other | 42 (8.6) | 27 (6.6) | 47 (4.9) | 22 (3.5) | ||