Table 2 Distribution of baseline scans, total nodules detected and participants with ≥ 1 lung nodule > 30 mm3 (~ 3 mm in diameter).
Month/season | Total baseline scans performed (n = 3456) | Total nodules ≥ 30 mm3 detected (n = 2496) | Participants with ≥ 1 nodule ≥ 30 mm3 (n = 1312) |
|---|---|---|---|
January | 336 (10%) | 206 (8%) | 131 (10%) |
February | 257 (7%) | 162 (6%) | 84 (6%) |
March | 390 (11%) | 295 (12%) | 155 (12%) |
April | 313 (9%) | 238 (10%) | 126 (10%) |
May | 289 (8%) | 249 (10%) | 134 (10%) |
June | 380 (11%) | 282 (11%) | 153 (12%) |
July | 263 (8%) | 229 (9%) | 113 (9%) |
August | 98 (3%) | 118 (5%) | 49 (4%) |
September | 380 (11%) | 281 (11%) | 136 (10%) |
October | 83 (2%) | 53 (2%) | 28 (2%) |
November | 379 (11%) | 192 (8%) | 124 (9%) |
December | 288 (8%) | 191 (8%) | 79 (6%) |
Summer | 1723 (50%) | 1397 (56%) | 711 (54%) |
Winter | 1733 (50%) | 1099 (44%) | 601 (46%) |
Seasonal variation | |||
p value | 0.865 | < 0.001 | 0.002 |
χ2 | 0.029 | 35.579 | 9.223 |
