Table 7. Association of Husband Smoking With Wife's Hypertension According to Sodium Intake
Exposure MeasurementsGroup 1Group 2Group 3
N (%)OR (95% CI)aN (%)OR (95% CI)aN (%)OR (95% CI)a
Couples smoking status
Neither‐smoker685 294 (1.82)1.001 649 556 (1.26)1.001 137 298 (2.29)1.00
Husband‐only285 379 (2.62)1.35 (1.31–1.39)581 759 (1.78)1.33 (1.30–1.36)509 174 (2.72)1.17 (1.14–1.19)
Wife‐only1891 (4.44)1.52 (1.21–1.90)1251 (3.52)1.91 (1.40–2.59)1055 (3.32)1.21 (0.86–1.70)
Mixed4471 (3.94)1.49 (1.27–1.74)3175 (2.83)1.52 (1.23–1.89)3302 (4.00)1.45 (1.21–1.73)
Husbands' smoking amountb
0685 294 (1.82)1.001 649 556 (1.26)1.001 137 298 (2.29)1.00
1 to 569 194 (2.48)1.43 (1.36–1.51)145 944 (1.54)1.23 (1.18–1.29)117 737 (2.37)1.07 (1.03–1.11)
6 to 10125 035 (2.28)1.24 (1.19–1.29)255 636 (1.70)1.32 (1.28–1.37)218 789 (2.56)1.13 (1.10–1.16)
11 to 1523 068 (2.71)1.43 (1.32–1.55)44 380 (1.76)1.35 (1.25–1.45)44 059 (2.69)1.17 (1.10–1.24)
16 to 2063 598 (3.21)1.39 (1.33–1.46)127 075 (2.13)1.40 (1.35–1.46)119 154 (3.25)1.28 (1.24–1.33)
≥214484 (5.11)1.91 (1.66–2.19)8724 (3.23)1.71 (1.51–1.93)9435 (4.55)1.61 (1.46–1.78)
P for trend <0.0001<0.0001<0.0001<0.0001<0.0001<0.0001
Cumulative exposure of Spouse smokingc, d
0747 852 (1.85)1.001 748 583 (1.24)1.001 230 136 (2.27)1.00
0.1 to 2.053 824 (2.63)1.35 (1.27–1.42)139 845 (1.71)1.29 (1.23–1.34)182 027 (2.35)1.06 (1.02–1.10)
2.1 to 4.022 975 (3.58)1.52 (1.41–1.63)51 227 (2.17)1.34 (1.26–1.42)67 551 (3.13)1.23 (1.17–1.29)
4.1 to 6.012 833 (4.27)1.55 (1.42–1.70)22 891 (2.75)1.44 (1.33–1.56)30 864 (3.62)1.24 (1.16–1.32)
6.1 to 8.07380 (4.86)1.54 (1.38–1.72)10 653 (3.68)1.63 (1.47–1.81)14 287 (4.45)1.33 (1.23–1.44)
>8.015 950 (6.99)1.58 (1.48–1.70)17 412 (5.51)1.74 (1.62–1.87)20 887 (6.57)1.52 (1.43–1.61)
P for trend <0.0001<0.0001<0.0001<0.0001<0.0001<0.0001
  • Group 1, Sichuan, Guangdong, Jiangxi, Ningxia, Jilin, Shanghai, Inner Mongolia, Heilongjiang, and Liaoning; Group 2, Jiangsu, Zhejiang, Qinghai, Hubei, Hebei, Shaanxi, Hunan, Fujian, Henan, Guangxi, and Beijing; Group 3, Tianjin, Anhui, Shandong, Hainan, Chongqing, Guizhou, Yunnan, Tibetan, Shanxi, Gansu, and Sinkiang; OR, odds ratio.

  • a Adjusted for age, urban inhabitants, higher school education, body mass index, and alcohol consumption.

  • b Couples with female active smoking were excluded from this analysis.

  • c Pack‐marriage year were used to evaluate the cumulative exposure of Spouse smoking, calculated by multiplying the number of packs of cigarettes husband smoked per day by the number of marriage duration.

  • d Couples with female active smoking and missing marriage duration were excluded from this analysis.