Table 1.
Sample size distribution from each population in the study.
| EUR | EAS | AFR | |||||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| Strata | CONTROL | CASE | Total | CONTROL | CASE | Total | CONTROL | CASE | Total |
| Ever-smokers | |||||||||
| Overall | 16165 | 22018 | 38183 | 1032 | 1495 | 2527 | 2309 | 1804 | 4113 |
| ADE | 16165 | 7838 | 24003 | 1032 | 586 | 1618 | 2309 | 734 | 3043 |
| SQC | 16165 | 5619 | 21784 | 1032 | 514 | 1546 | 2309 | 436 | 2745 |
| SCLC | 16165 | 1919 | 18084 | 1032 | 88 | 1120 | 2309 | 111 | 2420 |
| Never-smokers | |||||||||
| Overall | 6396 | 2207 | 8603 | 4335 | 5561 | 9896 | 1405 | 170 | 1575 |
| ADE | 6396 | 1268 | 7664 | 4335 | 4019 | 8354 | 1405 | 105 | 1510 |
| SQC | 6396 | 189 | 6585 | 4335 | 771 | 5106 | 1405 | 12 | 1417 |
| SCLC | 6396 | 60 | 6456 | 4335 | 4 | 4339 | 1405 | 2 | 1407 |
Sample size of each strata is displayed in the table. EUR, European population; EAS, East Asian population; AFR, African population. Overall, overall lung cancer; ADE, lung adenocarcinoma; SQC, squamous lung cancer; SCLC, small-cell lung cancer.