Skip to main content

Table 2 Associations and predictive abilities of nicotine dependence measures and smoking cessation

From: Do cravings predict smoking cessation in smokers calling a national quit line: secondary analyses from a randomised trial for the utility of ‘urges to smoke’ measures

N=2,535

UNIVARIATE

MULTIVARIATE†

ROC ANALYSIS

 

OR (95% C.I)

P VALUE (d.f)‡

OR (95% C.I)

P VALUE (d.f)‡

AUC (95% C.I)

P VALUE** (d.f)

FUTS CONTINUOUS

0.89 (0.81-0.97)

0.0067 (1)

0.88 (0.81-0.97)

0.0076 (1)

0.62 (0.59-0.64)

0.0769 (1)

SUTS CONTINUOUS

0.92 (0.84-1.01)

0.0747 (1)

0.92 (0.84-1.02)

0.1000 (1)

n/e

HSI CONTINUOUS

0.88 (0.82-0.93)

<0.0001 (1)

0.84 (0.78-0.89)

<0.0001 (1)

0.63 (0.60-0.66)

FUTS CATEGORISED

      

1

1

<0.01 (5)

1

0.0026 (5)

0.63 (0.60-0.66)

0.2828 (1)

2

1.14 (0.64-2.02)

 

1.35 (0.73-2.49)

   

3

1.19 (0.69-2.04)

 

1.39 (0.78-2.46)

   

4

0.92 (0.54-1.59)

 

1.10 (0.62-1.96)

   

5

0.55 (0.30-1.03)

 

0.64 (0.33-1.22)

   

6

0.98 (0.51-1.90)

 

1.05 (0.52-2.13)

   

SUTS CATEGORISED

      

1

1

0.2693 (5)

1

0.3764 (5)

n/e

 

2

0.98 (0.56-1.74)

 

1.16 (0.63-2.12)

   

3

0.97 (0.59-1.61)

 

1.15 (0.67-1.97)

   

4

0.99 (0.60-1.64)

 

1.09 (0.63-1.86)

   

5

0.76 (0.43-1.32)

 

0.87 (0.48-1.57)

   

6

0.57 (0.28-1.18)

 

0.70 (0.33-1.48)

   

HSI CATEGORISED

      

0

1

<0.01 (6)

1

<0.0001 (6)

0.64 (0.61-0.67)

 

1

0.97 (0.60-1.57)

 

1.05 (0.63-1.74)

   

2

1.01 (0.65-1.58)

 

0.98 (0.61-1.58)

   

3

0.76 (0.49-1.17)

 

0.78 (0.49-1.23)

   

4

0.76 (0.49-1.17)

 

0.70 (0.44-1.11)

   

5

0.60 (0.38-0.97)

 

0.52 (0.31-0.86)

   

6

0.37 (0.20-0.69)

 

0.26 (0.13-0.51)

   
  1. †adjusted for age, gender and treatment group [n=2,377 and n=2,404 for sample size retained in analyses for FUTS/SUTS and HSI, respectively]; ‡ Likelihood Ratio Test p value; **Chi-squared test p value; d.f=degrees of freedom
  2. OR = Odds Ratio; C.I = confidence interval; FUTS = frequency of urges to smoke; SUTS = strength of urges to smoke; HSI = heaviness of smoking index; ROC = Receiver Operating Characteristic; AUC = Area under ROC curve; n/e = not entered into the ROC analysis model.