Table 4 Stratified analyses of association between Dietary Inflammatory Index and serum klotho concentrations (pg/ml) in NHANES 2007–2016a
Variable | Dietary Inflammatory index group, β (95%CI), Quartiles | P for interaction | ||||
|---|---|---|---|---|---|---|
Quartile 1 | Quartile 2 | Quartile 3 | Quartile 4 | P for trend | ||
Age (year)c | Â | Â | Â | Â | Â | 0.003 |
 40–56 | 0 | 19.12 (-0.48, 38.73) | -3.88 (-24.88, 17.12) | -0.02 (-22.28, 22.24) | 0.667 |  |
 56–80 | 0 | -30.10 (-49.18, -11.02) | -45.72 (-65.20, -26.24) | -32.21 (-52.61, -11.81) |  < 0.001 |  |
Sex | Â | Â | Â | Â | Â | 0.094 |
 Male | 0 | -1.89 (-18.68, 14.90) | -33.26 (-51.94, -14.59) | -34.18 (-55.38, -12.98) |  < 0.001 |  |
 Female | 0 | 0.27 (-22.11, 22.65) | -9.46 (-31.78, 12.87) | -0.13 (-22.56, 22.30) | 0.808 |  |
BMI (kg/m2) | Â | Â | Â | Â | Â | 0.015 |
 normal (< 25 kg/m2) | 0 | -25.79 (-53.91, 2.32) | -60.43 (-90.66, -30.21) | -49.89 (-81.59, -18.20) |  < 0.001 |  |
 overweight (25–29.9 kg/m2) | 0 | -4.42 (-27.02, 18.18) | -18.79 (-42.72, 5.14) | -6.37 (-32.15, 19.41) | 0.346 |  |
 obesity (> = 30 kg/m2) | 0 | 15.76 (-6.21, 37.73) | 1.03 (-21.50, 23.55) | 2.37 (-21.07, 25.81) | 0.901 |  |
Physical activity | Â | Â | Â | Â | Â | 0.09 |
 Less than moderate | 0 | -13.04 (-32.90, 6.83) | -23.77 (-43.81, -3.72) | -23.83 (-44.40, -3.26) | 0.014 |  |
 Moderate | 0 | -30.33 (-77.01, 16.34) | -64.32 (-115.35, -13.29) | 18.67 (-33.41, 70.75) | 0.901 |  |
 Vigorous | 0 | 15.11 (-6.26, 36.48) | -12.36 (-35.75, 11.03) | -14.68 (-40.48, 11.12) | 0.187 |  |
CKDb | 0 | Â | Â | Â | Â | 0.041 |
 No | 0 | -0.74 (-15.61, 14.13) | -31.21 (-46.95, -15.47) | -16.99 (-33.78, -0.21) | 0.002 |  |
 Yes | 0 | -29.05 (-65.83, 7.73) | 3.42 (-33.85, 40.68) | -12.34 (-49.27, 24.58) | 0.923 |  |