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Table 2 Infant conditions by residence, Plant period, and adjusted by period, 1983-2014

From: Reproductive outcomes after non-occupational exposure to hexavalent chromium, Willits California, 1983-2014

Condition Rate (%) Relative Risk per Birth Chi-sq P-Value
Discharges Within Period Adjust by Period
ROC Willits 83-96 97-14 RR LCL UCL CMH BD
 Total discharges 33505 5767        
 Newborn 29311 5036        
 Post-natal admissions 4194 731        
Origin in perinatal period
 Preterm, LBW, SGA 8.30 9.43 1.11 1.16 1.14 1.05 1.25 0.0029 0.5801
 Macrosomia 5.63 6.50 1.24 1.12 1.16 1.04 1.29 0.0058 0.3909
 Intrauterine hypoxia/asphyxia 4.35 4.27 1.10 0.52 0.97 0.85 1.10 0.6139 0.0001
 Respiratory distress syndrome 1.58 1.56 0.96 1.01 0.99 0.79 1.23 0.9203 0.8410
 Perinatal jaundice 13.96 15.78 1.27 1.07 1.13 1.06 1.20 0.0002 0.0234
General infant health
 General health condition (Any) 23.57 25.11 1.07 1.08 1.08 1.03 1.13 0.0013 0.5011
 Infectious/parasitic 13.96 14.91 1.02 1.10 1.09 1.02 1.16 0.0070 0.4665
 Endocr Nutri Metab Immun 2.01 1.96 0.94 1.00 0.98 0.80 1.19 0.8377 0.7761
 Nervous/sense organs 5.19 5.98 1.11 1.19 1.17 1.05 1.31 0.0059 0.5950
 Respiratory system 3.90 4.09 1.29 0.82 1.05 0.92 1.20 0.4942 0.0012
 Digestive system 1.82 1.80 1.00 0.99 0.99 0.81 1.22 0.9587 0.9567
 Genitourinary system 1.19 1.23 1.16 0.98 1.04 0.81 1.34 0.7500 0.5307
Congenital anomaly
 Genitourinary 1.22 0.99 1.28 0.56 0.81 0.62 1.07 0.1428 0.0030
 Eye ear face neck cleft chrom 0.93 1.11 1.59 0.93 1.19 0.91 1.56 0.1963 0.0489