Case Control Study
Copyright ©The Author(s) 2020.
World J Diabetes. Oct 15, 2020; 11(10): 416-424
Published online Oct 15, 2020. doi: 10.4239/wjd.v11.i10.416
Table 1 The differences between groups of patients according to serum phosphate higher or lower than the cut-off point related to diabetes mellitus equal to 3.65 mg/dL
CharacteristicPatients with serum P > 3.65 mg/dL (n = 43), mean ± SDPatients with serum P < 3.65 mg/dL (n = 67), mean ± SDP value
Age (yr)71.2 ± 12.867.6 ± 15.20.2
BMI (kg/m2)30.2 ± 6.3a28.1 ± 4.60.04
WC (cm)108.09 ± 15.9102.8 ± 14.30.07
Uric acid (mg/dL)6.7 ± 1.2a6.09 ± 1.70.05
LDL-C (mg/dL)102.2 ± 29.5110.1 ± 32.10.2
HDL-C (mg/dL)44.5 ± 13.247.1 ± 9.80.2
Triglycerides (mg/dL)137.7 ± 54.4129.01 ± 60.10.4
Calcium (mg/dL)9.5 ± 0.69.5 ± 0.50.9
P (mg/dL)4.2 ± 0.4a3.2 ± 0.30.001
i-PTH (pg/mL)mean rank = 68.06a47.40.001
25(OH)D3 (ng/mL)18.9 ± 12.720.8 ± 9.20.3
Glucose (mg/dL)mean rank = 63.6a50.280.03
Insulin (μU/mL)11.6 ± 7.411.9 ± 8.70.8
HOMA-IR (mmol/L)mean rank = 56.854.60.7
SBP (mmHg)147.4 ± 16.7a140.2 ± 16.10.02
DBP (mmHg)mean rank = 62.0851.280.07
pMBP (mmHg)108.02 ± 9.8a103.6 ± 7.80.01
PP (mmHg)65.7 ± 16.261.01 ± 17.70.1
ACR (mg/g)mean rank = 63.2a50.60.04
eGFR (mL/min/1.73 m2)45.6 ± 22.1a55.4 ± 21.50.02
Category variablesn (%)n (%)
DM (yes/no)17 (39.5)/26 (60.5)a12 (17.9)/55 (82.1)0.01
Hypertension (yes/no)34 (79.1)/9 (20.9)a41 (61.2)/26 (38.8)0.03
Receiving vitD (yes/no)22 (51.2)/21 (48.8)a18 (26.9)/49 (73.1)0.009
Smoking (yes/no)10 (23.3)/33 (76.7)a4 (6)/63 (94)0.01
Alcohol consumption (yes/no)13 (30.2)/30 (69.8)16 (23.9)/51 (76.1)0.3
Physical activity (yes/no)17 (39.5)/26 (60.5)34 (50.7)/33 (49.3)0.1
Classification based on eGFR:0.04
eGFR > 90 mL/min/1.73 m23 (7)a6 (9)
eGFR = 60-90 mL/min/1.73 m27 (16.3)18 (26.9)
eGFR = 30-60 mL/min/1.73 m221 (48.8)37 (55.2)
eGFR = 15-30 mL/min/1.73 m212 (27.9)6 (9)
Table 2 Logistic regression analysis for predicting diabetes mellitus manifestations
Variables in modelP valueOdds ratioConfidence interval
Age (yr)0.0031.071.02-1.13
Gender (male/female)0.040.300.09–0.99
BMI (kg/m2)0.021.111.01–1.22
Hypertension (yes/no)0.41.580.4–5.9
Smoking (yes/no)0.083.70.8–17.02
Calcium (mg/dL)0.21.60.7–3.7
P (mg/dL)0.91.050.4–2.4
Table 3 Relation to serum glucose variables in our participants without diabetes mellitus (n = 81)
Variables in modelBetatSig.LowerUpper
Age (yr)-0.02-0.170.8-0.280.24
Gender (male/female)-0.03-0.30.7-7.85.6
BMI (kg/m2)0.43.90.0010.51.6
Hypertension (yes/no)0.020.20.8-6.58.2
Smoking (yes/no)0.040.30.7-8.412.09
eGFR value (mL/min/1.73 m2)- 0.2- 1.60.1-0.30.03
ACR (mg/g)0.030.20.7-0.0070.01
Calcium (mg/dL)0.131.20.2-2.49.7
P (mg/dL)0.10.90.3-2.77.7
Table 4 Relation to serum glucose variables in our patients with diabetes mellitus (n = 29)
Variables in modelBetatSig.LowerUpper
Age (yr)0.261.020.3-1.063.1
Gender (male/female)0.060.20.7-30.539.8
BMI (kg/m2)0.31.20.2-1.66.5
Hypertension (yes/no)-0.2-1.30.19-70.0415.5
Smoking (yes/no)0.331.40.15-12.774.4
eGFR value (mL/min/1.73 m2)- 0.06-0.20.79-1.10.86
ACR (mg/g)0.42.20.030.0030.09
Calcium (mg/dL)0.21.10.2-10.638.2
P (mg/dL)-0.13-0.60.5-32.417.07