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Table 2 Prior studies comparing FTND and HSI as measures of high nicotine dependence.

From: Fagerstrom test for nicotine dependence vs heavy smoking index in a general population survey

 

Population studied

Interview

Cohen's Kappa

Se (%)

95% CI

Sp (%)

95% CI

Accuracy(%)

95% CI

+PV

95% CI

-PV (%)

95% CI

[12]

749 smokers

Age range: 18-64

Face to face

0.74

79.6%

(70.6-88.5)

96.5%

(95.1-98)

94.5%

(92.8-96.2)

75.3%

(66-85.6)

97.3%

(95.9-98.6)

 

351 males

 

0.72

78.1%

(64.2-91.9)

96.1%

(93.8-98.4)

94%

(91.4-96.6)

72.7%

(58.4-87)

97.1%

(95-99.2)

 

398 females

 

0.76

80.9%

(68.5-93.2)

96.9%

(94.9-98.8)

95%

(92.7-97.3)

77.6%

(64.9-90.3)

97.4%

(95.6-99.2)

[8]

1,462 smokers (5 samples from the US and Spain)

Face to face

0.78

94.4%

(92.2-96.7)

88.1%

(86-90.1)

90%

(88.4-91.6)

77.8%

(74.2-81.3)

97.3%

(96.2-98.4)

[5]

819 smokers

Age range: 15 and over

Face to face

0.71

85.0%

(79.3-90.7)

91.3%

(89-93.5)

90%

(87.9-92.1)

71.4%

(64.8-77.9)

96.0%

(94.3-97.6)

  1. CI: Confidence interval, Se: Sensitivity, Sp: Specificity, +PV: positive predictive value, -PV: negative predictive value.