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Table 3 Regression results for Tobacco Smoking

From: Factors affecting tobacco smoking in Ethiopia: evidence from the demographic and health surveys

 

Model 1

Model 2

Model 3

Variables

Odds ratio (95% CI)

Odds ratio (95% CI)

Odds ratio (95% CI)

Fixed part

Individual-level variables

 2016 Survey Year (ref: 2011 year)

0.634* (0.546, 0.737)

0.652* (0.564, 0.753)

0.647* (0.560, 0.747)

 Chewing khat in the 30 days preceding the survey

8.162* (6.966, 9.564)

 Sex (Ref: female)

7.065* (5.792, 8.617)

7.536* (6.172, 9.202)

9.908* (8.169, 12.017)

 Age (ref: [15,16,17,18,19])

  20–24

3.842* (2.910, 5.074)

3.821* (2.906, 5.025)

4.530* (3.446, 5.955)

  25–29

5.951* (4.442, 7.972)

6.007* (4.509, 8.002)

7.437* (5.575, 9.922)

  30–34

8.059* (5.923, 10.966)

8.150* (6.026, 11.023)

10.060* (7.418, 13.644)

  35–39

8.542* (6.209, 11.750)

8.628* (6.310, 11.797)

10.863* (7.938, 14.865)

  40–49

9.579* (7.000, 13.109)

9.640* (7.093, 13.101)

11.909* (8.721, 16.262)

 Marital Status (ref: Not married)

  Married

1.078 (0.909, 1.278)

1.078 (0.912, 1.276)

1.144 (0.970, 1.350)

  Divorced

1.884* (1.502, 2.363)

1.941* (1.546,2.437)

2.041* (1.635, 2.550)

 Education (ref: No Education)

  Primary

1.008 (0.876, 1.160)

1.020 (0.889, 1.172)

1.053 (0.918, 1.209)

  Secondary

0.915 (0.748,1.119)

0.936 (0.766,1.143)

0.934 (0.765, 1.140)

  Higher

0.566* (0.444, 0.722)

0.596* (0.469, 0.758)

0.568* (0.447, 0.721)

 Occupation (ref: Unemployed)

  Professional/Clerical/Sales/Skilled/Services

1.055 (0.864, 1.289)

1.066 (0.871, 1.303)

1.239** (1.014, 1.513)

  Agriculture

1.158 (0.945, 1.418)

1.129 (0.922, 1.382)

1.356* (1.108, 1.658)

  Unskilled Manual/Other

1.517* (1.131, 2.036)

1.513* (1.130, 2.028)

1.820* (1.360, 2.437)

Household-level variables

 Household wealth quintile (ref: Very Rich)

  Quintile 1 (Very Poor)

2.511* (1.912, 3.297)

2.437* (1.871, 3.174)

2.234* (1.716, 2.909)

  Quintile 2

1.804* (1.369, 2.377)

1.780* (1.361, 2.327)

1.683* (1.288, 2.200)

  Quintile 3

1.779* (1.330,2.380)

1.746* (1.316,2.317)

1.692* (1.275, 2.246)

  Quintile 4

1.170 (0.893, 1.531)

1.172 (0.901, 1.524)

1.150 (0.884, 1.495)

 Household members smoke inside the house

11.565* (10.033, 13.331)

11.648* (10.115, 13.413)

12.065* (10.519, 13.838)

 Religion (ref: Islam)

  Orthodox

1.226** (1.014, 1.483)

1.027 (0.846, 1.246)

0.300* (0.239, 0.376)

  Catholic

2.961* (1.712, 5.122)

2.346* (1.379, 3.990)

1.096 (0.619, 1.940)

  Protestant

1.674* (1.268, 2.210)

1.285*** (0.964, 1.712)

0.473* (0.357, 0.628)

  Traditional/Other

3.783* (2.439, 5.866)

2.904* (1.882, 4.481)

1.342 (0.831, 2.168)

Community-level variables

 Place of residence (ref: Rural)

2.175* (1.641, 2.884)

2.193* (1.674, 2.872)

2.089* (1.583, 2.756)

 Administrative regions (ref: Tigray)

  Addis Ababa

3.638* (2.142, 6.178)

2.353* (1.356, 4.081)

3.537* (2.104, 5.946)

  Affar

1.904** (1.089, 3.328)

1.547 (0.864, 2.770)

1.607*** (0.948, 2.726)

  Amhara

0.689 (0.399, 1.192)

0.442* (0.230, 0.849)

0.718 (0.418, 1.233)

  Oromia

1.563 (0.841, 2.905)

1.700 (0.895, 3.230)

2.281* (1.247, 4.170)

  Benishangul-gumuz

4.890* (2.941, 8.131)

4.969* (3.044, 8.110)

3.718* (2.259, 6.121)

  SNNP

5.291* (2.186, 12.806)

4.639* (1.947, 11.052)

4.248* (1.770, 10.195)

  Eastern (Dire dawa, Harari and Somali)

2.350* (1.450,3.811)

0.649 (0.364, 1.158)

3.070* (1.905, 4.950)

  Gambela

7.084* (3.811,13.168)

8.048* (4.438, 14.596)

8.889* (4.846, 16.306)

Distance of SNNP Region from Gambela

0.686* (0.551,0.854)

0.703* (0.561,0.880)

0.731* (0.591, 0.903)

Distance of Oromia Region from Harari

0.967 (0.873, 1.072)

0.948 (0.857,1.050)

0.919*** (0.832, 1.014)

Altitude distance from the sea level

0.593* (0.451, 0.780)

0.602* (0.457, 0.794)

0.735* (0.592, 0.913)

Khat * Region (ref category: Khat Chewing Practices in Tigray)

 Khat * Addis Ababa

7.989* (5.354, 11.920)

 Khat * Affar

5.261* (3.716, 7.449)

 Khat * Amhara

10.539* (5.361, 20.719)

 Khat *Oromia

4.836* (3.419, 6.841)

 Khat * Benishangul-gumuz

2.406* (1.543, 3.752)

 Khat * SNNP

5.136* (3.050, 8.649)

 Khat * Eastern (Dire dawa, Harari and Somali)

21.896* (16.109, 29.762)

 Khat * Gambela

1.561** (1.009, 2.413)

Khat * Religion (ref category: Islamic khat chewers)

 Khat *Orthodox

7.072* (5.397, 9.268)

 Khat * Catholic

1.474 (0.591, 3.677)

 Khat * Protestant

6.930* (3.893, 12.339)

 Khat * Traditional/Other

2.028 (0.851, 4.833)

βehat

1.439* (1.093, 1.895)

2.742* (2.038, 3.691)

1.513* (1.102, 2.076)

Random part

ρa

0.17

0.15

0.15

ψb

0.661 (0.526, 0.830)

0.569 (0.449, 0.722)

0.589 (0.459, 0.756)

LR test statisticc

356.37*

295.86*

314.22*

Level 1 Units (N)

54,191

54,191

54,191

Level 2 Units

1193

1193

1193

  1. *1% significance level, ** 5% significance level, ***10% Significance level
  2. a Intra-cluster correlation
  3. b Variance of the random-intercept term
  4. c Comparing random-intercept logistic model against ordinary logit model