|
Groups
|
Test of differences
|
---|
|
NAC
|
Placebo
|
---|
|
n/total
|
%
|
n/total
|
%
|
Chi-squarea
|
---|
Week 4
| | | | |
0.28
|
Response
|
4/15
|
26.7
|
5/14
|
35.7
| |
No response
|
11/15
|
73.3
|
9/14
|
64.3
| |
Week 8
| | | | |
0.07
|
Response
|
5/13
|
38.5
|
4/12
|
33.3
| |
No response
|
8/13
|
61.5
|
8/12
|
66.7
| |
Week 12
| | | | |
0.15
|
Response
|
6/12
|
50.0
|
5/11
|
45.5
| |
No response
|
6/12
|
50.0
|
6/11
|
54.5
| |
-
aOne-tailed significance +
p < .10; *p < .05. No p values for these chi-squares reached significance at .05 and ranged from .60 to .79
- Response = very much improved (1) or much improved (2); no response = minimally improved (3), no change (4), minimally worse (5); no participants scored much worse (6) or very much worse (7)
-
NAC N-acetylcysteine