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Table 1 Characteristics of patients with and without an available chest X-Ray

From: Predicting risk of mortality in dialysis patients: a retrospective cohort study evaluating the prognostic value of a simple chest X-ray

Characteristics X-ray available X-ray not available p
Proportion alive at end of follow-up 672/824 444/800 <0.01
Age at dialysis start 57.3 [45.0, 68.1] 63.8 [53.0, 74.8] <0.01
Age at chest x-ray 59.7 [47.3, 70.7] - -
Sex (M) 54% 56% 0.64
Race    
   Caucasian 47% 59% <0.01
   Aboriginal 35% 28% <0.01
   Other 18% 13% 0.01
BMI 32.5 [28.5, 38.8] 33.0 [28.2, 38.3] 0.99
Diabetes 25% 20% 0.01
CHF 15% 18% 0.14
Hypertension 67% 70% 0.17
IHD 15% 20% <0.01
Hemoglobin (g/L) 93 [81, 106] 97 [84, 110] <0.01
Creatinine (mcm/L) 678 [529, 876] 632 [495, 815] <0.01
Urea (mmol/L) 31 [25, 40] 32 [24, 39] 0.93
CO2 (mmol/L) 20 [16, 23] 20 [17, 24] 0.03
Calcium (mmol/L) 2.1[1.8, 2.3] 2.1 [1.8, 2.3] 0.97
PO4 (mmol/L) 2.1[1.7, 2.6] 2.0 [1.6, 2.5] 0.01
Albumin (g/L) 29 [24, 34] 30 [25, 35] 0.01
HD days at chest x-ray 463 [9, 1520] N/A -
Follow-up days 1173 [585, 2266] 1112 [453, 1926] <0.01
Older Vintage (start year < 2005) 29% 30% 0.91
Urban dialysis 83% 68% <0.01