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Table 2 Determinants of Smoking cessation, Smoking intensity and Age of smoking initiation in crude and adjusted variables

From: Pattern of cigarette smoking: intensity, cessation, and age of beginning: evidence from a cohort study in West of Iran

Variable Smoking cessation Smoking intensity Age of smoking initiation
Crude OR
(95%CI)
Adjusted OR (95%CI) Crude IRR
(95%CI)
Adjusted IRR (95%CI) Crude coefficient
(95%CI)
Adjusted coefficient (95%CI)
Gender Male 1 1 1 1 1 1
Female 2.56 (1.97_3.32) 2.03 (1.47_2.80) 0.54 (0.52_0.56) 0.49 (0.47_0.52) 5.57 (4.53_6.62) 4.08 (2.94_5.22)
Age group 35_45 1 1 1 1 1  
46_55 1.77 (1.41_2.22) 1.83 (1.44_2.33) 1.14 (1.11_1.18) 1.09 (1.06_1.12) −0.5(−1.41_0.37)  
56_65 3.36 (2.66_4.26) 3.58 (2.71_4.72) 1.06 (1.03_1.09) 1.10 (1.06_1.13) 2.17 (1.23_3.11)  
Marital status Married 1   1 1 1  
Single 0.26 (0.10_0.68)   0.77 (0.70_0.85) 0.87 (0.78_0.96) 0.68(−2.32_3.69)-  
Divorced/widow/widower 1.54 (0.87_2.44)   0.81 (0.76_0.86) 1.35 (1.26_1.46) 3.86 (1.88_5.83)  
Education Illiterate 1 1 1 1 1 1
≤ 5 years 0.75 (0.59_0.95) 1.30 (0.59_0.95) 1.11 (1.08_1.14) 0.94 (0.91_0.98) −2.96(−3.96_-1.95) −1.59(− 2.64_-0.54)
6_9 years 0.48 (0.37_0.63) 1.01 (0.37_0.63) 1.06 (1.03_1.10) 0.89 (10.86_0.93) −2.70(−3.79_-1.62) −1.02(− 2.20_-0.14)
10_12 years 0.58 (0.43_0.78) 1.36 (0.43_0.78) 0.89 (0.86_0.93) 0.77 (0.73_0.80) −2.55(− 3.79_-1.31) −1.21(− 2.54_-0.11)
High school/ academic 0.84 (0.57_1.25) 2.02 (0.57_1.25) 0.57 (0.53_0.60) 0.50 (0.46_0.53) −2.23(−3.79_-0.59) −1.83(− 3.57_-0.83)
Place of resident Urban 1   1   1  
Rural 0.86 (0.71_1.02)   1.02 (1.00_1.05)   0.75 (0.40_1.54)  
Income status Lowest 1   1   1  
Lower 0.94 (0.71_1.25)   1.14 (1.11_1.19)   0.09(−1.09_1.28)  
Middle 0.92 (0.69_1.23)   1.15 (1.11_1.19)   −1.21(−2.40_-0.30)  
Higher 0.86 (0.65_1.15)   0.99 (0.95_1.02)   −1.32(−2.51_-0.13)  
Highest 1.02 (0.77_1.36)   0.93 (0.89_0.96)   −1.60(−2.81_-0.39)  
BMI 18.4≤ 1 1 1 1 1  
18.5_24.9 2.10 (1.12_3.94) 2.66 (1.39_5.12) 0.80 (0.76_0.85) 0.84 (0.79_0.89) 1.34(−0.82_3.50)  
25.0–29.9 3.18 (1.71_5.93) 4.16 (2.17_7.95) 0.82 (0.77_0.86) 0.87 (0.82_0.93) 1.52(−0.62_3.67)  
30.0–34.9 4.48 (2.34_8.58) 5.98 (3.04_11.7) 0.78 (0.73_0.83) 0.85 (0.80_0.91) 1.27(−1.00_3.56)  
> 35 5.16 (2.38_11.1) 6.50 (2.87_14.6) 0.79 (0.73_0.86) 1.04 (0.95_1.13) 3.56 (0.70_6.42)  
Childhood SHS No 1   1 1 1 1
Yes 1.14 (0.94_1.38)   1.03 (1.09_1.14) 1.12 (1.00_1.26) 1.12 (1.09_1.14) −0.94(−1.71_-0.18)
Current SHS No 1 1 1 1 1  
Yes 0.83 (0.68_1.00) 0.68 (0.52_0.87) 1.10 (1.11_1.17) 1.14 (1.06_1.41) −0.38(−1.19_0.42)  
Smoking intensity Light smokers 1 1 1 1
Medium smokers 0.65 (0.50_0.84) 0.68 (0.51_0.91) −3.54(−4.62_-2.45) −2.91(−3.99_-1.84)
Heavy smokers 0.55 (0.45_0.68) 0.57 (0.54_0.71) −4.82(−5.64_ − 4.01) -4.01(−4.85_-3.16)
Age of smoking initiation 18≥ 1 1 1 1
> 19 0.75 (0.58_0.86) 0.71 (0.58_0.86) 0.71 (0.70_0.73) 0.71 (0.70_0.73)