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Table 1 Baseline characteristics of the study cohort

From: White blood cell count predicts the odds of kidney function decline in a Chinese community-based population

Variables White blood cell, 109/L
All Quartile 1
(<5.0)
Quartile 2
(5.0–6.0)
Quartile 3
(6.0–7.0)
Quartile 4
(≥7.0)
P-trend
N = 3768 N = 835 N = 1047 N = 925 N = 961  
Age, year 56.6 (8.5) 56.3 (8.0) 56.5 (8.5) 56.9 (8.5) 56.8 (9.0) 0.149
Males, n (%) 1352 (35.9%) 203 (24.3%) 356 (34.0%) 336 (36.3%) 457 (47.6%) <0.001
White blood cell, 109/L 6.1 (1.5) 4.4 (0.5) 5.5 (0.3) 6.4 (0.3) 8.2 (1.2) <0.001
Body mass index, kg/m2 26.0 (3.4) 25.3 (3.3) 25.9 (3.2) 26.2 (3.4) 26.6 (3.4) <0.001
eGFR, mL/min/1.73m2 101.1 (10.6) 101.9 (10.1) 101.4 (10.0) 101.0 (10.6) 100.2 (11.8) 0.001
Current smoking status, n (%) 709 (18.8%) 82 (9.8%) 164 (15.7%) 168 (18.2%) 295 (30.7%) <0.001
Current drinking status, n (%) 868 (23.0%) 145 (17.4%) 257 (24.5%) 221 (23.9%) 245 (25.5%) <0.001
Prevalence of disease, n (%)       
 Hypertension 1833 (48.6%) 355 (42.5%) 500 (47.8%) 466 (50.4%) 512 (53.3%) <0.001
 Diabetes mellitus 654 (17.4%) 105 (12.6%) 153 (14.6%) 167 (18.1%) 229 (23.8%) <0.001
 Dyslipidemia 2768 (75.1%) 567 (69.6%) 739 (72.3%) 709 (78.4%) 753 (79.8%) <0.001
 Cardiovascular disease 477 (12.7%) 82 (9.8%) 119 (11.4%) 132 (14.3%) 144 (15.0%) <0.001
Treatment, n (%)       
 Antihypertensive 1183 (31.6%) 197 (23.8%) 323 (31.0%) 315 (34.2%) 348 (36.4%) <0.001
 Hypoglycemic 382 (10.2%) 62 (7.4%) 88 (8.4%) 105 (11.4%) 127 (13.3%) <0.001
 Lipid-lowering 397 (10.6%) 59 (7.1%) 104 (10.0%) 109 (11.9%) 125 (13.1%) <0.001
  1. Abbreviations: eGFR estimated glomerular filtration rate