RT Journal
A1 Czobor P, Volavka J
T1 Violence in the mentally ill: Questions remain
JF Archives of General Psychiatry
JO Archives of General Psychiatry
YR 1999
FD February 1
VO 56
IS 2
SP 193
OP 193
DO 10.1001/archpsyc.56.2.193
UL http://dx.doi.org/10.1001/archpsyc.56.2.193
AB 
However, within-subject measurements over time are related. Omission of temporal relationships in repeated measures data can cause the probability of type I error to deviate from the nominal level of statistical significance (P<.05) and lead to false statistical inference.