|
Predictor Variables
|
Categories
|
The outcome variable (PLOS) > 75th percentile (≥33 days)
|
**p-value
|
*p-value
|
|---|
|
No (%)
|
Yes (%)
|
|---|
|
Sex
|
Male
|
146 (81.6)
|
33 (18.4)
|
0.169
|
0.000
|
|
Female
|
55 (61.1)
|
35 (38.9)
|
|
Place of residence
|
Rural
|
110 (73.8)
|
39 (26.2)
|
0.547
|
0.706
|
|
Urban
|
91 (75.8)
|
29 (24.2)
|
|
Level of monthly income
|
no constant income
|
33 (70.2)
|
14 (29.8)
|
0.291
|
0.396
|
|
< 1500
|
67 (70.5)
|
28 (29.5)
|
|
1500–6000
|
81 (79.4)
|
21 (20.6)
|
|
> 6000
|
20 (80.0)
|
5 (20.0)
|
|
Smoking status
|
No
|
173 (73.0)
|
64 (27.0)
|
0.522
|
0.076
|
|
Yes
|
28 (87.5)
|
4 (12.5)
|
|
Health care cost coverage
|
Self
|
171 (76.7)
|
52 (23.3)
|
0.023
|
0.103
|
|
Free (gov’t)
|
30 (65.2)
|
16 (34.8)
|
|
Co-morbid condition
|
No
|
117 (73.6)
|
42 (26.4)
|
0.443
|
0.606
|
|
Yes
|
84 (76.4)
|
26 (23.6)
|
|
Burn-related surgery
|
No
|
194 (76.1)
|
61 (23.9)
|
0.043
|
0.036
|
|
Yes
|
7 (50)
|
7 (50)
|
|
Presence of cancer
|
No
|
173 (77.6)
|
50 (22.4)
|
0.028
|
0.018
|
|
Yes
|
28 (60.9)
|
18 (39.1)
|
|
Presence of trauma
|
No
|
160 (72.4)
|
61 (27.6)
|
0.873
|
0.060
|
|
Yes
|
41 (85.4)
|
7 (14.6)
|
|
Presence of any chronic disease
|
No
|
154 (73.3)
|
56 (26.7)
|
0.221
|
0.323
|
|
Yes
|
47 (79.7)
|
12 (20.3)
|
|
Type of admission
|
Elective
|
95 (68.8)
|
43 (31.2)
|
0.864
|
0.023
|
|
Emergency
|
106 (80.9)
|
25 (19.1)
|
|
Poly-pharmacy
|
No
|
169 (74.4)
|
58 (25.6)
|
0.861
|
0.811
|
|
Yes
|
32 (76.2)
|
10 (23.8)
|
|
In-hospital SSI
|
No
|
173 (77.2)
|
51 (22.8)
|
0.244
|
0.035
|
|
Yes
|
28 (62.2)
|
17 (37.8)
|
|
In-hospital sepsis
|
No
|
191 (74.9)
|
64 (25.1)
|
0.366
|
0.771
|
|
Yes
|
10 (71.4)
|
4 (28.6)
|
|
HAP
|
No
|
196 (74.8)
|
66 (25.2)
|
0.887
|
1
|
|
Yes
|
5 (71.4)
|
2 (28.6)
|
|
Age (years)
|
18 to 40
|
115 (76.2)
|
36 (23.8)
|
0.188
|
0.539
|
|
> 40
|
86 (72.9)
|
32 (27.1)
|
|
Duration of surgery (hrs.)
|
≤ 1
|
57 (67.1)
|
28 (32.9)
|
0.391
|
0.083
|
|
> 1
|
107 (76.4)
|
33 (23.6)
|
0.678
|
|
Not recorded
|
37 (84.1)
|
7 (15.9)
|
0.172
|
|
Appropriate use of SAP
|
Yes
|
35 (66.0)
|
18 (34.0)
|
0.404
|
0.105
|
|
No
|
166 (76.9)
|
50 (23.1)
|
|
Total number of antibiotic exposure
|
≤ 2 antibiotic exposure
|
165 (80.1)
|
41 (19.9)
|
0.017
|
0.000
|
|
> 2 antibiotic exposure
|
36 (57.1)
|
27 (42.9)
|
|
ASA class
|
I to II
|
150 (72.8)
|
56 (27.2)
|
0.499
|
0.193
|
|
III to IV
|
51 (81.0)
|
12 (19.0)
|
|
CDC wound class
|
I
|
34 (70.8)
|
14 (29.2)
|
0.047
|
0.494
|
|
II to IV
|
167 (75.6)
|
54 (24.4)
|
|
Charlson CI score
|
Zero
|
70 (72.2)
|
27 (27.8)
|
0.303
|
0.469
|
|
> 1
|
131 (76.2)
|
41 (23.8)
|
|
Before surgery LOS (days)
|
≤ 7
|
163 (82.3)
|
35 (17.7)
|
0.000
|
0.000
|
|
> 7
|
38 (53.5)
|
33 (46.5)
|
|
Number of co-morbidity
|
Zero
|
117 (73.6)
|
42 (26.4)
| |
0.626
|
|
1 to 2
|
76 (77.6)
|
22 (22.4)
|
0.248
|
|
≥ 3
|
8 (66.7)
|
4 (33.3)
|
0.248
|
- *p value of chi-square, **p-value for binary logistic regression analysis
