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Table 3 Association between readiness, importance and confidence and drinking and smoking at six months

From: Predictive value of readiness, importance, and confidence in ability to change drinking and smoking

Readiness, importance, and confidence to change drinking

Number of drinks/week

Number of binge drinking episodes/month

 

IRR (95%CI)

p

IRR (95%CI)

p

Readiness (reference group: low)

    

Medium

0.92 (0.74, 1.13)

0.40

0.99 (0.78, 1.24)

0.91

High

1.07 (0.86, 1.34)

0.53

1.08 (0.85, 1.38)

0.52

 

IRR (95%CI)

p

IRR (95%CI)

p

Importance (reference group: low)

    

Medium

1.11 (0.87, 1.42)

0.40

1.11 (0.85, 1.45)

0.43

High

1.00 (0.70, 1.45)

0.98

1.07 (0.71, 1.60)

0.75

 

IRR (95%CI)

p

IRR (95%CI)

p

Confidence (reference group: low)

    

Medium

0.84 (0.66, 1.08)

0.18

0.82 (0.62, 1.06)

0.13

High

0.80 (0.65, 0.98)

0.03

0.74 (0.59, 0.92)

0.008

Readiness, importance, and confidence to change smoking

Number of cigarettes/smoking day

  
 

IRR (95%CI)

p

IRR (95%CI)

p

Readiness (reference group: low)

    

Medium

1.03 (0.88, 1.20)

0.73

  

High

0.98 (0.81, 1.18)

0.79

  
 

IRR (95%CI)

p

IRR (95%CI)

p

Importance (reference group: low)

    

Medium

0.99 (0.85, 1.15)

0.92

  

High

1.08 (0.91, 1.28)

0.36

  
 

IRR (95%CI)

p

IRR (95%CI)

p

Confidence (reference group: low)

    

Medium

0.96 (0.82, 1.13)

0.62

  

High

0.91 (0.77, 1.08)

0.29

  
  1. IRR: incidence rate ratio.
  2. All models were negative binomial regression models. Analyses conducted for subjects with unhealthy alcohol use were adjusted for receipt of brief intervention, drinking at baseline (number of drinks per day or number of binge drinking episodes per month) and smoking status at baseline. Analyses conducted for subjects with smoking were adjusted for receipt of brief intervention, smoking at baseline (number of cigarettes per smoking day), and presence of unhealthy alcohol use at baseline.
  3. For readiness, importance and confidence: low (1–4), medium (5–7), high (8–10), recoded from 1–10.