Table 1.

Unadjusted analysis for the matching variables between the two age groups

	Age				p
	< 80 Years		≥ 80 Years
	n	%	n	%
Fundoplication
Fundophrenicopexy	517	18.28	113	29.66	< 0.001
Nissen fundoplication	973	34.41	110	28.87
Toupet fundoplication	1044	36.92	116	30.45
Other	294	10.40	42	11.02
Access
Laparoscopy	2653	93.81	348	91.34	0.075
Open	175	6.19	33	8.66
Type of hernia
Mixed	726	25.67	55	14.44	< 0.001
Paraesophageal	845	29.88	74	19.42
Up-side-down stomach	1257	44.45	252	66.14
Hiatal repair
Other	29	1.03	5	1.31	0.138
Suture only	1793	63.40	220	57.74
Suture and mesh	967	34.19	152	39.90
Mesh	39	1.38	4	1.05
ASA
I	291	10.29	8	2.10	< 0.001
II	1654	58.49	120	31.50
III/IV	883	31.22	253	66.40
Sex
Male	947	33.49	86	22.57	< 0.001
Female	1881	66.51	295	77.43
Risk factors
Overall
Yes	904	31.97	166	43.57	< 0.001
No	1924	68.03	215	56.43
COPD
Yes	384	13.58	81	21.26	< 0.001
No	2444	86.42	300	78.74
Diabetes mellitus
Yes	204	7.21	41	10.76	0.018
No	2624	92.79	340	89.24
Aortic aneurysm
Yes	16	0.57	3	0.79	0.486
No	2812	99.43	378	99.21
Immunosuppression
Yes	33	1.17	4	1.05	1.000
No	2795	98.83	377	98.95
Steroids
Yes	62	2.19	15	3.94	0.048
No	2766	97.81	366	96.06
Smoking
Yes	191	6.75	5	1.31	< 0.001
No	2637	93.25	376	98.69
Coagulation disorder
Yes	48	1.70	15	3.94	0.009
No	2780	98.30	366	96.06
Antiplatelet therapy
Yes	224	7.92	72	18.90	< 0.001
No	2604	92.08	309	81.10
Anticoagulation
Yes	47	1.66	18	4.72	< 0.001
No	2781	98.34	363	95.28

ASA American Society of Anesthesiologists status, COPD chronic obstructive pulmonary disease