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Table 1 Socio-demographic characteristics of children by blood lead concentration

From: Blood Lead Concentrations in 1–3 Year Old Lebanese Children: A Cross-sectional study

  Blood lead concentration (μg/L)   
  <100 (N = 242) n(%) > = 100 (N = 39) n(%) Total (N = 281) n(%) P-value
Blood lead concentration (μg/L)     
   < 50 59 (24.4) 59 (21.0)  
   50 – 99 183 (75.6) 183 (65.1)  
   100 – 149 36 (92.3) 36 (12.8)  
   159 – 199 3 (7.7) 3 (1.1)  
Mean B-Pb (Range) 58.3 (10 – 90) 113.8 (100 – 160) 66.0 (10 – 160)  
Age (months)     
   11 – 23 125 (51.7) 17 (43.6) 142 (50.5) 0.35
   24 – 44 117 (48.3) 22 (56.4) 139 (49.5)  
Mean age (SD) 22.9 (8.6) 24.8 (8.7) 23.1 (8.6) 0.19
Gender     
   Males 127(52.5) 21(53.8) 148 (52.7) 0.87
Type of clinic     
   Outpatient 170 (70.8) 33 (84.6) 203 (72.8) 0.07
   Private 70 (29.2) 6 (15.4) 76 (27.2)  
Mother's Education     
   Up to middle school 107 (44.4) 27(69.2) 134(47.9) 0.004
   Secondary and above 134 (55.6) 12(30.8) 146(52.1)  
Father's Education     
   Up to middle school 109(45.6) 29(74.4) 138(49.6) 0.001
   Secondary and above 130(54.4) 10(25.6) 140 (50.4)  
Mother's work     
   Housewife 200 (82.6) 34 (87.2) 234 (83.3) 0.009
   Non-manual 39 (16.1) 2 (5.1) 41 (14.6)  
   Manual 3 (1.2) 3 (7.7) 6 (2.1)  
Father's work     
   Non-manual* 137(56.8) 9 (23.1) 146(52.1) 0.001
   Manual 104(43.2) 30(76.9) 134(47.9)  
Number of siblings     
   0 81(33.5) 12(30.8) 93(33.1) 0.84
   1–2 118(48.8) 21(53.8) 139(49.5)  
   >= 3 43(17.8) 6(15.4) 49(17.4)  
Family monthly income (US $)     
   < 200 11 (4.5) 5 (12.8) 16 (5.7) 0.004
   200 – 499 99 (40.9) 17 (43.6) 116 (41.3)  
   500 – 999 71 (29.3) 16(41.0) 87(31.0)  
   >= 1000 61 (25.2) 1 (2.6) 62 (22.1)  
  1. Note: Missing data in some variables. * Non-manual includes 4 who are not working.