Table 4: Factors influencing length of hospital stay.

Comparator Number Mean Length of
Stay ± Standard
Deviation
Difference of Mean (95%
Confidence Interval)
Significance (t; df;
p-value)
Technique - lap
open
16
188
2.8235 ± 2.2212
5.4545 ± 5.0949
-2.631
(-5.0928 to -0.1691)
t = 2.1072; df = 202;
p = 0.0363
Mesh - biological
synthetic
17
119
10.6666 ± 6.4443
4.0165 ± 2.8518
-6.6501
(-8.4354 to -4.8647)
t = 7.3671; df = 134;
p = 0.0001
Mesh - onlay
sublay
144 27 5.3402 ± 4.4220
3.2962 ± 2.0346
2.044
(0.3278 to 3.7601)
t = 2.3513; df = 169;
p = 0.0199
Infection - no
yes
178
26
4.8820 ± 4.8864
7.3076 ± 4.8908
-2.425
(-4.4414 to -0.4097)
t = 2.3726; df = 202;
p = 0.0186

t: statistic; df: degrees of freedom.