Table 3

Neurobehavioural test results in the exposed and control groups

Exposed to Cd (n=42)Controls (n=47)p Values
t test
Mean (SD)Mean (SD)
Switching attention time (ms):
 Simple reaction time direction3-150 498 (217)441 (135)0.058
 Simple reaction time location413 (227)330 (130)0.042
 Switching reaction time direction3-150 684 (282)663 (160)>0.10
 Switching reaction time location3-150 580 (323)564 (183)>0.10
Symbol-digit substitution speed3-150 2.8 (1.41)2.4 (1.19)0.008
Hand-eye coordination2.0 (0.4)1.9 (0.4)>0.10
Finger tapping425 (108)435 (98)>0.10
Digit span:
 Forward5.5 (1.3)6.0 (1.1)0.064
 Backward5.0 (1.5)5.3 (1.3)>0.10
  • 3-150 Statistical analysis after log normal transformation of the data: geometric means (GSDs).