Table 1 Baseline demographics
CharacteristicParticipants with a persistent SSN
Age at baseline years62.0 (10.1)
Sex female n (%)28 (26)
Smoking status n (%)
 Current57 (52.8)
 Former51 (47.2)
Smoking history pack-years38 (19.8)
Pure GGN at detection
 Number69
 Size mm11.1±3.6 (5.1–22.6)
Part-solid GGN at detection
 Number48
 Size mm12.7±6.2 (4.6–34.3)
  • Data are presented as median (interquartile range) or mean±sd (range), unless otherwise stated. SSN: sub-solid nodule; GGN: ground-glass nodule. #: n=108.