Table 3. Associations between factors and awareness rate of the maximum daily salt intake and behavior of salt reduction among Chinese adults aged 18 years old and above — China, 2015.
| Characteristics | Awareness of maximum daily salt intake | Behavior of salt reduction | |||||
| OR | 95% CI* | p value | OR | 95% CI | p value | ||
| Note: "−" means not applicable.
Abbreviations: Ref=reference * CI=confidence interval. | |||||||
| Age (years) | |||||||
| 18−29 | Ref | Ref | |||||
| 30−39 | 1.49 | 1.28−1.74 | <0.001 | 1.42 | 1.31−1.55 | <0.001 | |
| 40−49 | 1.92 | 1.65−2.24 | <0.001 | 1.61 | 1.48−1.76 | <0.001 | |
| 50−59 | 1.37 | 1.13−1.66 | 0.002 | 1.56 | 1.42−1.71 | <0.001 | |
| 60−69 | 1.93 | 1.54−2.42 | <0.001 | 1.79 | 1.62−1.97 | <0.001 | |
| 70+ | 1.90 | 1.52−2.39 | <0.001 | 1.59 | 1.36−1.86 | <0.001 | |
| Sex | |||||||
| Men | Ref | Ref | |||||
| Women | 1.60 | 1.46−1.75 | <0.001 | 1.50 | 1.42−1.57 | <0.001 | |
| Residence | |||||||
| Urban | Ref | Ref | |||||
| Rural | 0.67 | 0.51−0.87 | 0.003 | 0.75 | 0.67−0.84 | <0.001 | |
| Geographic location | |||||||
| Eastern | Ref | Ref | |||||
| Central | 0.86 | 0.65−1.14 | 0.300 | 0.69 | 0.60−0.79 | <0.001 | |
| Western | 0.98 | 0.75−1.29 | 0.905 | 0.68 | 0.57−0.79 | <0.001 | |
| Education | |||||||
| Primary or less | Ref | Ref | |||||
| Junior high | 4.66 | 3.81−5.69 | <0.001 | 1.47 | 1.39−1.56 | <0.001 | |
| Senior high | 11.09 | 8.83−13.92 | <0.001 | 1.85 | 1.69−2.02 | <0.001 | |
| College or above | 20.41 | 14.99−27.79 | <0.001 | 2.16 | 1.91−2.43 | <0.001 | |
| Family per capita income, CNY | |||||||
| Q1 (<6,000) | Ref | Ref | |||||
| Q2 (6,000−11,999) | 1.17 | 0.97−1.40 | 0.097 | 1.07 | 0.98−1.17 | 0.129 | |
| Q3 (12,000−21,599) | 1.24 | 0.99−1.55 | 0.064 | 1.17 | 1.05−1.30 | 0.005 | |
| Q4 (21,600+) | 1.41 | 1.08−1.84 | 0.011 | 1.20 | 1.05−1.37 | 0.009 | |
| Don’t know/refused | 0.93 | 0.67−1.29 | 0.673 | 0.83 | 0.74−0.94 | 0.003 | |
| Employment status | |||||||
| Employed | Ref | Ref | |||||
| Housework | 0.58 | 0.48−0.70 | <0.001 | 1.04 | 0.94−1.15 | 0.479 | |
| Retired | 1.67 | 1.39−2.02 | <0.001 | 1.35 | 1.19−1.53 | <0.001 | |
| Unemployed | 0.81 | 0.64−1.01 | 0.062 | 0.94 | 0.80−1.10 | 0.422 | |
| BMI categories | |||||||
| Normal weight, BMI:18.5−23.9 | Ref | Ref | |||||
| Underweight, BMI<18.5 | 0.77 | 0.55−1.07 | 0.120 | 0.73 | 0.57−0.95 | 0.019 | |
| Overweight, BMI:24−27.9 | 1.05 | 0.95−1.15 | 0.361 | 1.18 | 1.13−1.23 | <0.001 | |
| Obesity, BMI≥28 | 1.13 | 1.00−1.27 | 0.055 | 1.22 | 1.14−1.31 | <0.001 | |
| Hypertension | |||||||
| Yes | Ref | Ref | |||||
| No | 0.95 | 0.86−1.05 | 0.324 | 0.90 | 0.86~0.94 | <0.001 | |
| Awareness of maximum daily salt intake | |||||||
| No | − | − | − | Ref | |||
| Yes | − | − | − | 3.20 | 2.77−3.70 | <0.001 | |