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Table 3 Quartiles of change in Hb levels during 12 months and the subsequent 1-year mortality

From: Prevalence and predictive importance of anemia in Swedish nursing home residents – a longitudinal study

Hb change range (g/L) Quartile 1: Quartile 2: Quartile 3: Quartile 4: p-value
−45 – –10 (n = 58) −9 – −2 (n = 55) −1 – +6 (n = 56) +7 – +28 (n = 51) (comparing q1 with q4)
Hb at baseline in men (g/L) mean ± SD 134.3 ± 11.0 (n = 22) 132.6 ± 9.9 (n = 16) 127.7 ± 14.0 (n = 15) 112.9 ± 11.3 (n = 12) p < 0.001
Hb at baseline in women (g/L) mean ± SD 128.2 ± 10.8 (n = 36) 127.0 ± 13.0 (n = 39) 123.4 ± 10.9 (n = 41) 120.5 ± 13.1 (n = 39) p = 0.007
Male sex (%) 37.9 (n = 22) 29.1 (n = 16) 26.8 (n = 15) 23.5 (n = 12) P = 0.10
Age (years) 83.4 ± 8.3 (n = 58) 83.6 ± 6.3 (n = 55) 83.1 ± 7.3 (n = 56) 85.7 ± 5.8 (n = 51) p = 0.10
Number of drugs, mean ± SD 7.2 ± 3.0 (n = 58) 6.7 ± 2.5 (n = 55) 6.8 ± 3.1 (n = 56) 6.7 ± 3.5 (n = 51) p = 0.47
BMI (kg/m2) mean ± SD 25.5 (±5.1) (n = 58) 25.6 ± 5.0 (n = 55) 25.0 ± 4.4 (n = 56) 24.9 (±4.8) (n = 51) p = 0.53
eGFR (mL/min) 56.8 ± 16.1 (n = 58) 55.7 ± 14.3 (n = 55) 51.9 ± 14.4 (n = 56) 54.2 ± 15.7 (n = 51) p = 0.38
BNP (ng/L) mean ± SD 139.4 ± 190.2 (n = 57) 117.8 ± 166.4 (n = 54) 159.6 ± 235.8 (n = 55) 128.6 ± 114.0 (n = 51) p = 0.72
MNA-SF initial result mean ± SD 10.5 ± 2.3 (n = 58) 10.9 ± 2.2 (n = 55) 10.8 ± 2.1 (n = 55) 10.4 ± 2.8 (n = 51) p = 0.74
MMSE result mean ± SD 16.2 ± 6.7 (n = 49) 17.6 ± 6.0 (n = 50) 17.8 ± 6.5 (n = 49) 17.9 ± 6.2 (n = 49) p = 0.20
1 year mortality (%) 36.2 18.2 17.9 17.6  
p = 0.032 (q1 vs q2) p = 0.028 (q1 vs q3) P = 0.030 (q1 vs q4)
  1. Hb hemoglobin, q quartile, SD standard deviation, BMI Body Mass Index, BNP B-type natriuretic peptide, eGFR estimated glomerular filtration rate, MNA-SF Short-form Mini-nutritional assessment, MMSE Mini Mental State Examination
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