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Occup Environ Med 62:181-187 doi:10.1136/oem.2003.011346
  • Original article

Differential effects of lead exposure on components of verbal memory

Table 7

 Comparisons of errors among memory groups

Group I “No impairment” Group II “Retrieval difficulties” Group III “Generalised memory impairment”
All post-hoc comparisons are made with group I as the reference group.
*p ⩽ 0.01.
Total score
Confabulations 0.6 (1.16) 1.0 (1.59) 0.5 (1.34) NS
Intrusions 0.3 (0.74) 0.5 (1.20) 0.6 (1.14) NS
Repetitions 4.2 (3.25) 2.9 (2.93)* 2.7 (2.58)* F(2, 235) = 6.49, p<0.01
Delayed recall
Confabulations 0.2 (.46) 0.4 (.80) 0.7 (0.94)* F(2, 235) = 8.42, p<0.01
Intrusions 0.2 (0.44) 0.3 (0.71) 0.4 (0.78) NS
Repetitions 0.7 (1.13) 0.3 (0.52)* 0.2 (0.44)* F(2, 234) = 9.77, p<0.01
Recognition
Confabulations 0.9 (1.44) 1.7 (2.03)* 2.1 (2.55)* F(2, 234) = 9.00, p<0.01
Intrusions 0.5 (0.82) 0.8 (1.22) 1.2 (1.14)* F(2, 234) = 8.64, p<0.01

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