Table 3.

Median age on the day of surgery by country or region. Age day of surgery by sex for primary and revisional procedures by country or region

	Primary metabolic bariatric procedures									Revisional Metabolic Bariatric Procedures
	Female			Male			All			Female			Male			All
	Median	Lower IQR	Upper IQR	Median	Lower IQR	Upper IQR	Median	Lower IQR	Upper IQR	Median	Lower IQR	Upper IQR	Median	Lower IQR	Upper IQR	Median	Lower IQR	Upper IQR
Australia	39.9	32.2	49.4	42.6	34.8	51	40.5	32.7	49.8	49.5	41	57	51.2	42.6	58.6	49.9	41.2	57.4
Austria	39	40.4	48	43.2	41	50.5	40	40.7	48.7	48	27.5	40.9	54	29.4	44.6	49	27.6	41.7
Canada—Ontario	43.2	35.6	51.4	46.7	39.5	54.1	43.7	37.2	53.9	44.8	37.7	51.3	48.3	40.4	52.9	45.5	37.8	51.8
China	31	25	37	30	23	36	30	24.4	37	43.7	32.8	49.4	45.3	34.6	48.9	44.7	34.7	46.9
Iran	38	31	46	36	30	42	38	31	45	40	34	48	39	35	48	40	34	48
Israel	34.9	26.7	44.6	36.9	27.4	46.8	35.3	26.8	45.2	46.2	37.18	54.2	48.7	38.2	55.3	46.8	37.4	54.4
Italy	44	34	52	36	45	52	44	34	52	45	32	57	48	39	57	45	32	57
Kuwait	33	24	41	31	22	39	32	23	42	40	32	47	42	34	48	41	32	47
Malaysia	41	36	49	40	35	45.8	41	36	49	49	0	0	0	0	0	49	0	0
Netherlands	43	33	52	48	37	55	44	34	53	50	41	56	52	47	59	50	42	57
New Zealand	42.7	34.7	51.5	46.3	37.4	53.7	43.3	35.1	51.8	47.5	39.6	56.2	51.4	44.3	58.3	48.2	40.1	57
Norway	40.7	32	50.3	45.5	35	52.5	41.9	32.4	51	46.3	35.2	54.2	45.9	36.4	56.6	46.3	35.8	55.4
Russia	40.5	25.3	48.6	41.4	34.6	49.2	40.6	34.2	48.6	44.7	39.5	51.7	46	39.7	52.9	44.9	39.6	52
South Africa	41	36	49	46	38	54	43	37	50	50	50	50	48	48	48	49	48	50
South Korea	36	29	43	33	29	40	35	29	42	38.5	34	43.3	41	30.8	48	39	33.8	43.3
Sweden	40	32	49	44	35	52	40	34	50	46	37	54	48	39.5	52	46	37.5	54
United Kingdom	43.3	34.7	52.5	47.6	38.5	55.4	43.9	35.2	53	49.7	42.2	56.5	52.3	47.3	58.8	50.3	42.6	56.9
United States of America	42	34	51	45	37	54	43	34	52	49	42	57	52	44	59	50	42	57
USA-Michigan	42	34	51	45	38	54	42	34	51	48	40	55	52	43.5	61	48	41	56
Uzbekistan	36	28	43	44	30	49	40	29	46	38	36	40	46	44	48	42	40	44