Table 1. Individuals (%) at high risk of developing lung cancer using the ENSE survey of 2011–2012 and extrapolation into absolute figures for the target population at national level*.
| Population at risk in the ENSE sample | Target population at national level* | |||||
|---|---|---|---|---|---|---|
| N | NELSON criteria† | NLST criteria‡ |
Total population | NELSON criteria† | NLST criteria‡ | |
| % (95% CI) | % (95% CI) | n | n | N | ||
| General population** | ||||||
| All | 21,006 | 6.6 (6.2; 6.9) | 4.9 (4.6; 5.2) | 39,441,665 | 2,653,744 | 2,003,483 |
| Men | 9,648 | 9.7 (9.1; 10.3) | 7.9 (7.4; 8.5) | 19,234,370 | 1,862,034 | 1,523,120 |
| Women | 11,358 | 3.9 (3.6; 4.3) | 2.4 (2.1; 2.7) | 20,207,295 | 791,710 | 480,364 |
| Ever-smoker population*** | ||||||
| All | 9,496 | 14.5 (13.8; 15.2) | 10.9 (10.3; 11.5) | 18,122,937 | 2,653,744 | 2,003,483 |
| Men | 5,727 | 16.3 (15.4; 17.3) | 13.3 (12.5; 14.2) | 11,417,417 | 1,862,034 | 1,523,120 |
| Women | 3,769 | 11.8 (10.8; 12.8) | 7.2 (6.3; 8.0) | 6,705,520 | 791,710 | 480,364 |
* Target population using Spanish population census data of 2014 (www.ine.es).
** All population was used in the denominator for the computation of the prevalence.
*** Ever-smoker population was used in the denominator for the computation of the prevalence.
† NELSON eligibility criteria: Age: 50–74 years. Smoking history: >15 cigarettes/day during >25 years; or >10 cigarettes/day during >30 years; if former smokers, quitting time ≤10 years. Trial registration number: ISRCTN63545820.
‡ NLST eligibility criteria: Age: 55–74 years. Smoking history: pack-years ≥30 years; if former smokers, quitting time ≤15 years. Trial registration number: NCT00047385
CI: confidence interval.