Table 2.

Comparison of operative characteristics of elderly vs non-elderly patients undergoing complex abdominal wall reconstruction with acellular porcine dermal matrix

	Overall series			Propensity-matched series
	Non-elderly, N = 95 (%)	Elderly, N = 41 (%)	p value	Non-elderly, N = 35 (%)	Elderly N = 35 (%)	p value
Type of incision
Midline	73 (77.7%)	31 (75.6%)	0.794	25 (71.4%)	27 (77.1%)	0.584
Flank	2 (2.1%)	1 (2.4%)	1.000	0 (0.0%)	1 (2.9%)	1.000
Para median	5 (5.3%)	4 (9.8%)	0.453	2 (5.7%)	4 (11.4%)	0.673
Left lower quadrant	0	2 (4.9%)	0.090	0	1 (2.9%)	1.000
Left upper quadrant	3 (3.2%)	1 (2.4%)	1.000	3 (8.6%)	0	0.239
Right upper quadrant	5 (5.3%)	0	0.322	2 (5.7%)	0	0.492
Right lower quadrant	2 (2.1%)	1 (2.4%)	1.000	0	1 (2.9%)	1.000
Bilateral subcostal	7 (7.4%)	1 (2.4%)	0.434	3 (8.6%)	1 (2.9%)	0.614
Lysis of adhesions	73 (76.8%)	27 (65.9%)	0.182	28 (80.0%)	22 (62.9%)	0.112
Intestinal resection	19 (20.2%)	8 (20.0%)	0.977	9 (25.7%)	6 (17.6%)	0.417
Fistula take down	7 (7.4%)	2 (4.9%)	0.722	4 (11.8%)	1 (2.9%)	0.198
Stoma take down	10 (10.6%)	3 (7.3%)	0.753	4 (11.4%)	3 (8.6%)	1.000
Lateral component separation	36 (37.9%)	16 (39.0%)	0.900	13 (37.1%)	15 (42.9%)	0.625
Mesh placement technique
Sublay (retro-rectus)	58 (63.7%)	25 (64.1%)	0.026*	25 (75.8%)	20 (60.6%)	0.255
Onlay	10 (11.0%)	0		3 (9.1%)	0
Bridge	18 (19.8%)	7 (17.9%)		5 (15.2%)	6 (18.2%)
Underlay	5 (5.5%)	7 (17.9%)		0	7 (21.2%)
Wound class II/III/IV	46 (48.4%)	18 (43.9%)	0.628	18 (51.4%)	16 (45.7%)	0.632
Panniculectomy	5 (5.3%)	1 (2.4%)	0.667	1 (2.9%)	1 (2.9%)	1.000
Excision of redundant skin	14 (14.7%)	11 (26.8%)	0.094	3 (8.6%)	10 (28.6%)	0.062
Primary wound closure	78 (82.1%)	34 (82.9%)	0.908	30 (85.7%)	30 (85.7%)	1.000
Mesh size (cm2)	449.8 ± 257.5	544.81 ± 580.9	0.241	457.55 ± 268.7	571.19 ± 626.4	0.377
Number of drains	1.99 ± 1.3	2.21 ± 1.1	0.355	1.91 ± 1.1	2.24 ± 1.1	0.235

*Significant at p < 0.05