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Table 3 Log-binomial regression estimates of factors associated with target smoking cessation

From: Differences in spousal influence on smoking cessation by gender and education among Japanese couples

Outcome: target’s cessation after marriage

Men (n =708)

Women (n =293)

Explanatory variables

Risk ratio

95% CI

Risk ratio

95% CI

Model 1

    

Age

    

  20-29

0.85

(0.54-1.33)

1.10

(0.60-2.00)

  30-39

0.65**

(0.51-0.82)

0.87

(0.54-1.39)

  40-49

0.76**

(0.62-0.94)

0.96

(0.61-4.51)

  50 or older

Reference

 

Reference

Presence of children

1.07

(0.97-1.17)

1.12*

(1.01-1.24)

Couple’s educational combinationa

    

  LOW & low couple

Reference

Reference

  LOW & high couple

0.84

(0.58-1.20)

0.84

(0.56-1.26)

  HIGH & low couple

1.11

(0.81-1.53)

0.96

(0.64-1.43)

  HIGH & high couple

1.02

(0.81-1.29)

1.25

(0.93-1.69)

Counterpart’s smoking status

    

  Continued smoking

Reference

Reference

  Quit smoking/Never smoking

2.27**

(1.61-3.18)

1.16

(0.90-1.49)

Model 2

    

Age

    

  20-29

0.85

(0.54-1.33)

1.11

(0.59-2.10)

  30-39

0.65**

(0.51-0.82)

0.87

(0.53-1.42)

  40-49

0.76**

(0.62-0.93)

0.96

(0.59-1.55)

  50 or older

Reference

Reference

Presence of children

1.06

(0.97-1.16)

1.13*

(1.01-1.26)

Couple’s educational combinationa

    

  LOW & low couple

Reference

Reference

  LOW & high couple

0.75

(0.23-2.43)

0.91

(0.58-1.42)

  HIGH & low couple

1.08

(0.50-2.36)

0.99

(0.62-1.58)

  HIGH & high couple

0.64

(0.26-1.57)

1.32

(0.94-1.85)

Counterpart’s smoking status

    

  Continued smoking

Reference

Reference

  Quit smoking/Never smoking

1.94*

(1.12-3.37)

1.55

(0.90-2.65)

Couple’s educational combinationa × counterpart’s smoking status

    

  LOW & low × counterpart’s non-smoking

Reference

Reference

  LOW & high × counterpart’s non-smoking

1.13

(0.33-3.89)

0.94

(0.51-1.74)

  HIGH & low × counterpart’s non-smoking

1.03

(0.44-2.42)

1.16

(0.58-2.32)

  HIGH & high × counterpart’s non-smoking

1.65

(0.65-4.20)

1.48*

(1.05-2.08)

  1. Note: **p<.01, *p<.05.
  2. a“LOW & low couple”: Both spouses had low education levels; “Low & high couple”: Target’s educationwas low and counterpart’s was high; “HIGH & low”: Target’s education was high and counterpart’s waslow; “HIGH & high couple”: Both spouses had high education levels.