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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%)