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Table 3 Agreement between follow-up survey and Health Factor data for 6 month prolonged abstinence from smoking among subgroups in the Victory Trial, as well as proportion of quitters for individuals with only one data source (n = 4097)

From: Validating the use of veterans affairs tobacco health factors for assessing change in smoking status: accuracy, availability, and approach

  Subjects with both Follow-up Survey and Health Factor Data (n = 1713) Subjects with only one data source
% Quitter Follow-up Survey % Quitter Health Factor Sensitivity (95% CI) Specificity (95% CI) Kappa (95%CI) % Agreement Survey (n = 1594) Health Factor (n = 790)
Quitter n/ntot
(%)
Quitter n/ntot (%)
Age ≥ 65 (n = 910) 11.9% 11.7% 59.5
(30.0, 89.0)
94.3
(79.7, 100.0)
0.53
(0.39, 0.66)
90.4% 56/402 (13.9%) 17/134 (12.7%)
Chronic Lower respiratory disease (n = 782) 9.3% 11.0% 54.5
(23.2, 85.9)
93.5
(78.7, 100.0)
0.44
(0.29, 0.60)
89.8% 39/294 (13.3%) 18/134 (13.4%)
Patients with any mental illness (n = 1928) 10.1% 9.9% 53.8
(33.8, 73.7)
95.1
(85.0, 100.0)
0.49
(0.39, 0.59)
90.9% 91/736 (12.4%) 56/403 (13.9%)
Patients hospitalized in the past year (n = 434) 14.0% 10.1% 36.4
(6.9,
65.8)
93.4
(72.9, 100.0)
0.32
(0.11–0.52)
86.7% 17/142 (12.0%) 11/104 (10.6%)