Table 1.
Characteristics of study participants
| Study data set | Test data set | SCLC | ||||
|---|---|---|---|---|---|---|
| Controls | Patients | Controls | Patients | patients | ||
| Number | Total | 423 | 141 | 3917 | 162 | 15 |
| (Male, Female, Unknown) | (279,144) | (93,48) | (2363,1554) | (103,55,4) | (15,0) | |
| Age, y | Mean (SD) | 61.1(8.7) | 62.7(9.2) | 52.6(10.8) | 65.7(10.4)* | 66.8(8.1)* |
| Range | 32~82 | 34~83 | 23~88 | 34~83 | 50~76 | |
| BMI | Mean (SD) | 23.0(3.1) | 22.6(2.8) | 22.7(3.2) | 22.8(3.1) | 22.7(3.5) |
| Range | 16.5~36.4 | 15.4~29.8 | 14.0~41.3 | 15.8~35.1 | 17.7~30.7 | |
| Smoking status | Never | 126 | 42 | 2020 | 55 | 0 |
| Ex | 45 | 15 | 1304 | 25 | 5 | |
| Current | 237 | 79 | 554 | 81 | 10 | |
| Unknown | 15 | 5 | 39 | 1 | 0 | |
| Performance | 0 | 95 | 129 | 6 | ||
| 1 | 41 | 31 | 5 | |||
| > 1 | 2 | 0 | 2 | |||
| Unknown | 3 | 2 | 2 | |||
| Stage** | I | 69 | 93 | 6 | ||
| II | 8 | 16 | 0 | |||
| III | 39 | 30 | 6 | |||
| IV | 25 | 12 | 3 | |||
| Unknown | 0 | 11 | 0 | |||
| Histology | Adenocarcinoma | 100 | 123 | |||
| Squamous cell carcinoma | 36 | 33 | ||||
| Others | 4 | 5 | ||||
| Unknown | 1 | 1 | ||||
* Significant at p < 0.001 in t-test
** In principle, stage indicates pathological stage (p-stage). In some advanced stage (III and IV) patients who had not undergone pathological examinations, clinical stage (c-stage) is indicated instead.