TABLE 3.

Factors Related to Hg and Pb Contents of Breast Milk in Austria (Kruskal-Wallis Test)

nHg (μg/L)SDnPb (μg/L)SD
Area of residence
 Tulln481.070.83481.220.92
 Linz371.821.13422.48*2.39
 Vienna272.171.55451.291.12
Maternal weight
 <60 kg252.091.18351.811.98
 60–80 kg591.380.94631.521.51
 >80 kg141.241.79181.360.89
Premature infant (born before the end of 37th week of gestation)
 No911.501.241051.741.79
 Yes211.94*1.07291.251.09
Consumption of fish
 Never81.921.55110.800.80
 Occasionally871.541.201091.69*1.75
 Frequently171.651.18151.82*1.31
Cereals
 Never100.870.89171.461.00
 Occasionally491.48*1.06541.601.72
 Frequently521.85*1.35641.711.77
Supplementation with vitamins
 No701.361.00871.551.43
 Yes421.96*1.44481.782.03
Smoking
 Never861.601.231031.571.65
 Past smoker121.651.27141.150.94
 Current smoker141.421.16182.40*2.00
  • SD indicates standard deviation.

    Data are means and SD.

  • * P < .05.

  • P < 01.