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Table 4 Univariate and multivariate analysis of risk factors for obesity vs. normal weight

From: Obesity epidemic has emerged among Nigerians

Characteristics N Univariate p-value Multivariate p-value
  RR (95% CI) RR (95% CI)
Age categories (years)    <0.0001   <0.0001
- <30 77 1.00   1.00  
- 30 – 39 201 8.14 (3.09, 21.43)   6.73 (2.51, 18.02)  
- 40 – 49 234 9.46 (3.61, 24.78)   8.07 (3.01, 21.66)  
- ≥ 50 130 9.03 (3.42, 23.87)   7.74 (2.88, 20.81)  
Sex    <.0001   <0.0001
- Male 358 1.00   1.00  
- Female 282 2.43 (1.99, 2.96)   2.54 (2.08, 3.10)  
Marital status    0.0001   0.009
- Not married 166 1.00   1.00  
- Married 476 1.58 (1.22, 2.04)   1.24 (1.00, 1.53)  
Education    0.0003   0.83
- Secondary (High school) 148 1.00   1.00  
- ≥ Tertiary (College) 489 1.74 (1.31, 2.31)   1.03 (0.80, 1.34)  
- None/Primary (Elementary) 4 1.80 (0.26, 7.33)   1.21 (0.38, 5.42)  
Occupation    <.0001   0.008
- Skilled manual 259 1.00   1.00  
- Professional/executive 317 1.35 (1.12, 1.64)   1.25 (1.06, 1.48)  
- Unskilled manual 50 0.43 (0.22, 0.83)   0.69 (0.36, 1.31)  
- Self-employed 16 0.34 (0.09, 1.24)   0.47 (0.13, 1.65)  
Socio-economic status    <0.0001   0.003
- Low 263 1.00   1.00  
- Middle 254 2.01 (1.60, 2.53)   1.39 (1.13, 1.72)  
- High 125 1.66 (1.26, 2.19)   1.24 (0.97, 1.59)  
Sugar sweetened beverages    0.93   
- < 1/month 119 1.00    
- ≤ 1/week 272 0.86 (0.67, 1.10)    
- 2 – 6/week 173 0.92 (0.70, 1.19)    
- ≥ 1/day 78 0.93 (0.67, 1.29)    
Physical activity    0.26   
- Low 393 1.00    
- Moderate 142 0.87 (0.68, 1.10)    
- High 107 0.83 (0.63, 1.10)    
Television (hours/week)    0.65   
- <6/week 294 1.00    
- 6 - 10/week 177 0.95 (0.75, 1.19)    
- 11 - 20/week 106 1.12 (0.88, 1.44)    
- > 20/week 65 0.97 (0.70, 1.35)