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Table 1 Preoperative clinical characteristics for all patients and patients grouped according to diabetes status, alongside a normal weight reference population

From: Phosphatidylcholine and its relation to apolipoproteins A-1 and B changes after Roux-en-Y gastric bypass: a cohort study

  All patientsa (n = 220) NDM (n = 151) DMH-NDM (n = 34) DMH-DMH (n = 20) ANOVA p-valueb Reference (n = 235) T-test p-valuec
mean (SD) mean (SD) mean (SD) mean (SD) mean (SD)
Age (years) 44.6 (9.5) 42.1 (9.0) 50.5 (8.1)* 51.5 (7.4)* 7 e−9 45.5 (8.9)* 2 e−4
Gender (female/male) 150/70 113/38 18/16 9/11 0.01 120/115 1 e−6
Height (cm) 171.8 (9.6) 171.0 (9.8) 174.5 (8.0) 171.2 (11.4) 0.167 171.0 (9.4) 0.996
Weight (kg) 125.2 (21.6) 126.3 (22.4) 126.4 (20.6) 117.6 (19.7) 0.244 79.2 (15.5)* 1 e−61
BMI (kg/m2) 42.3 (5.8) 43.1 (5.9) 41.4 (5.4) 40.0 (3.6)* 0.006 27.0 (4.5)* 1 e−81
Systolic blood pressure (mmHg) 128 (14.7) 126.8 (14.9) 131.2 (12.6) 128.2 (14.7) 0.285 132.1 (19.1)* 0.004
Diastolic blood pressure (mmHg) 82.2 (10.1) 82.0 (11.0) 81.4 (6.8) 82.4 (10.1) 0.93 82.3 (16.7) 0.831
HbA1c (mmol/mol) 39.0 (9.7) 34.5 (3.8) 48.8 (11.7)* 55.2 (10.0)* 4 e−12 40.7 (5.8)* 5 e−26
HbA1c (%) 5.7 (0.89) 5.3 (0.35) 6.6 (1.07) 6.9 (0.91) ND 5.9 (0.53) ND
Total cholesterol (mmol/L) 4.74 (1.04) 4.98 (0.96) 4.22 (1.11)* 4.24 (1.17)* 4 e−5 5.54 (1.07)* 5 e−7
HDL-Cholesterol (mmol/L) 1.15 (0.30) 1.19 (0.29) 1.06 0.36) 1.09 (0.35) 0.038 1.35 (0.32)* 2 e−6
LDL-Cholesterol (mmol/L) 2.88 (0.95) 3.12 (0.85) 2.36 (0.97)* (n = 32) 2.27 (1.13)* (n = 18) 1 e−6 3.69 0.97) (n = 67)* 2 e−5
VLDL-Cholesterol (mmol/L) 0.71 (0.32) 0.67 (0.30) 0.75 (0.30) (n = 32) 0.89 (0.47) (n = 18) 0.086 0.58 (0.25) (n = 67)* 0.033
Triglycerides (mmol/L) 1.67 (1.09) 1.50 (0.74) 2.11 (1.95) 2.13 (1.26) 0.038 1.28 (0.83)* 0.008
Statin treatment (+/−) 49/171 12/139 17/17* 13/7* 5 e−7 NA  
  1. Data are reported as mean (SD). If the number of patients with available clinical data was less than 95% of the total of patients in the group, the actual number is specified. SD Standard deviation, BMI Body mass index, HbA1c Glycated hemogobin, HDL High-density lipoprotein, LDL Low-density lipoprotein, VLDL Very low-density lipoprotein, NDM Patients without diabetes mellitus (DM), DMH-NDM Patients with DM in remission after Roux-en-y gastric bypass surgery (RYGB), DMH-DMH Patients with DM not in remission after RYGB. Reference, a population of healthy individuals with normal weight. a All patients also include 15 patients who belong to other subgroups than the three showed in table; b p-value from One-way ANOVA comparing the three patient-subgroup means; c p-value from independent samples t-test comparing the reference group mean to the mean in the patient subgroup NDM. * indicates significant difference (p < 0,05) when compared to the NDM group. No significant differences were found between the two diabetes subgroups. The two diabetes subgroups were not compared to the reference group. Post hoc p-values from Tukey and Games-Howell are not shown in table. Data on statin treatment were not available (NA) for the reference population