13
&
,
" #
! '#
-
"
,-
&
,
&
'# & 0
3±w,
3 -
0
; w -
,
&
-
"
,
,
-&
.;
%
" , % -
C
-
%
.; &
&'
!. , !& &
,
.
,
& !
&
"
-'
%
! &
- '
C !
, '
,
&
"
&'%
'
-
&
!
&
&'%
& - ' &
,-
&
" )
– W
" ( &
&!# ! –
'" 1 2
2 3
&
, #
), 6 !
-)
– H
" ( &
# ! – 1, 2 3
&
,
), 3 – ) (U)
"
(F). :
-
!.
- !
-
<
0,05.
C
'&
G00
& *
(r) B
({),
" #
&
.
=
&
#
0
&
,-
&
"
Microsoft Excel-2003
"
'
WindowsXP, C
'
' BIOSTAT (Primer
of Biostatistics, version 4.03) SPSS 11.5.
H
HI
*( ($%-6%#,%*%2( "4$(" 4%/%4) &*" (1 &%4/ *()"*. %2%
/#%-"44 5%*. !G G#% ( "4$(6 2" "# *(3%& !6 / #%'% )()%6.
%
, ' %'
&
% -
&
,
-
&
&
,
,
&
!
0
'#
&
& #
" -!%
&
- -
'
, '#
&.
',
'
&
,
& & - &