Table 2 Comparison of smoking prevalence (%; 95% confidence interval) by ascertainment method and site, CRONICAS Study, Peru, 2010
Occasional smoking | Lima (n=195) | Tumbes (n=187) | Total (n=382) |
Self-Report | 10.3 (6.0, 14.5) | 7.5 (3.7, 11.3) | 8.9 (6.1, 11.8) |
Creatinine-Adjusted Cotinine (10–100 mcg/mg) | 0.5 (−0.5, 1.5) | 2.1 (0.1, 4.2) | 1.3 (0.2, 2.4) |
Difference by method | 9.7 (5.4, 14.1) | 5.3 (1.0, 9.7) | 7.6 (4.5, 10.7) |
Daily smoking | Lima (n=195) | Tumbes (n=187) | Total (n=382) |
Self-Report | 3.1 (0.7, 5.5) | 6.4 (2.9, 9.9) | 4.7 (2.6, 6.8) |
Creatinine-Adjusted Cotinine (≥100 mcg/mg) | 2.1 (0.1, 4.0) | 9.1 (5.0, 13.2) | 5.5 (3.2, 7.8) |
Difference by method | 1.0 (−2.1, 4.2) | −2.7 (−8.1, 2.7) | −0.8 (−3.9, 2.3) |