Table 3 Subgroup analysis
From: Association between dietary vitamin C and abdominal aortic calcification among the US adults
Stratification | N(%) | AAC-24 score | AAC-8 score | ||
|---|---|---|---|---|---|
β (95%CI) | P for interaction | β (95%CI) | P for interaction | ||
Gender (%) | |||||
 Male | 1089 (48.66) | -0.506 (-0.812, -0.201) | 0.104 | -0.202 (-0.317, -0.087) | 0.073 |
 Female | 1208 (51.34) | -0.141 (-0.471, 0.189) | -0.051 (-0.174, 0.073) | ||
Age (years) | |||||
 < 65 | 1520 (66.17) | -0.205 (-0.469, 0.060) | 0.607 | -0.077 (-0.176, 0.022) | 0.468 |
 ≥ 65 | 777 (33.83) | -0.337 (-0.776, 0.102) | -0.147 (-0.312, 0.018) | ||
BMI (kg/m2) | |||||
 < 30 | 1462 (63.65) | -0.257 (-0.550, 0.037) | 0.250 | -0.094 (-0.204, 0.016) | 0.169 |
 ≥ 30 | 835 (36.35) | -0.519 (-0.869, -0.170) | -0.212 (-0.343, -0.080) | ||
Hypertension (%) | |||||
 Yes | 789 (30.08) | -0.519 (-0.897, -0.142) | 0.234 | -0.214 (-0.356, -0.072) | 0.153 |
 No | 1508 (69.92) | -0.240 (-0.519, 0.039) | -0.088 (-0.193, 0.016) | ||
Diabetes (%) | |||||
 Yes | 504 (16.11) | -0.717 (-1.327, -0.108) | 0.184 | -0.301 (-0.529, -0.073) | 0.115 |
 No | 1793 (83.89) | -0.280 (-0.523, -0.037) | -0.106 (-0.197, -0.016) | ||
Coronary heart disease (%) | |||||
 Yes | 132 (5.56) | -0.560 (-1.429, 0.308) | 0.599 | -0.233 (-0.558, 0.093) | 0.527 |
 No | 2165 (94.44) | -0.324 (-0.557, -0.090) | -0.126 (-0.213, -0.038) | ||
Angina/angina pectoris (%) | |||||
 Yes | 80 (3.33) | -0.358 (-1.330, 0.615) | 0.968 | -0.211 (-0.574, 0.152) | 0.661 |
 No | 2217 (96.67) | -0.338 (-0.573, -0.103) | -0.128 (-0.216, -0.041) | ||
Smoking status (%) | |||||
 Yes | 1696 (72.40) | -0.345 (-0.619, -0.071) | 0.935 | -0.135 (-0.237, -0.033) | 0.926 |
 No | 601 (27.60) | -0.325 (-0.729, 0.079) | -0.127 (-0.277, 0.024) | ||
Alcohol consumption (%) | |||||
 Yes | 1968 (88.67) | -0.339 (-0.579, -0.099) | 0.998 | -0.135 (-0.224, -0.045) | 0.880 |
 No | 329 (11.33) | -0.338 (-1.073, 0.398) | -0.113 (-0.387, 0.162) | ||