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. 2023 Jun 28;56(1):335–344. doi: 10.1007/s11255-023-03679-x

Table 2.

Mean levels of 25(OH)D based on different conditions

Overall T1 T2 T3 P for trend
25(OH)D, serum (nmol/L)
Gender
Male 69.49 ± 31.27 71.56 ± 31.56 68.65 ± 30.26 67.58 ± 31.86 0.043
Female 72.94 ± 35.21 78.54 ± 34.41 74.17 ± 37.26 67.76 ± 33.14  < 0.001
Low eGFR
No 62.17 ± 27.82 66.24 ± 28.89 61.85 ± 28.16 57.76 ± 26.69  < 0.001
Yes 79.33 ± 35.77 83.14 ± 35.56 79.96 ± 36.73 75.41 ± 34.65  < 0.001
CKD
Stage 1 57.17 ± 24.49 60.99 ± 24.68 55.46 ± 23.26 54.69 ± 25.05 0.001
Stage 2 67.80 ± 30.18 71.87 ± 30.0 68.94 ± 31.29 61.48 ± 28.14  < 0.001
Stage 3 79.83 ± 35.46 83.31 ± 35.45 80.94 ± 36.62 75.44 ± 33.87  < 0.001
Stage 4 78.59 ± 38.56 86.94 ± 40.74 71.5 ± 33.88 80.94 ± 40.76 0.469
Stage 5 68.57 ± 36.38 67.98 ± 26.05 73.92 ± 43.82 65.46 ± 34.88 0.82
Age
 < 60 years 59.69 ± 28.01 63.88 ± 28.55 58.69 ± 27.46 55.76 ± 28.42  < 0.001
 > 60 years 78.07 ± 34.07 81.1 ± 33.81 78.93 ± 35.55 74.09 ± 32.92  < 0.001
Diabetes
No 72.66 ± 33.05 77.2 ± 32.76 72.47 ± 32.81 67.93 ± 32.98  < 0.001
Yes 69.13 ± 33.79 70.27 ± 32.89 69.87 ± 36.17 67.43 ± 32.15 0.159

T1 the first tertile, T2 the second tertile, T3 the top tertile, CKD chronic kidney disease, Low eGFR: eGFR < 60 ml/min/1.73 m2. CKD stage 1: eGFR ≥ 90 ml/min/1.73 m2 and ACR ≥ 3 mg/mmol; stage 2: 60 ml/min/1.73 m2 ≤ eGFR < 90 ml/min/1.73 m2 and ACR ≥ 3 mg/mmol; stage 3: 30 ml/min/1.73 m2 ≤ eGFR < 60 ml/min/1.73 m2; stage 4: 15 ml/min/1.73 m2 ≤ eGFR < 30 ml/min/1.73 m2; stage 5: eGFR < 15 ml/min/1.73 m2