Table 1.

Age and sex of patients with continuous spinal anesthesia by 22G Quincke (n=1,212) or Sprotte spinal needles (n=377) and a 28G microcatheter

Age (years)	Quincke spinal needle				Sprotte spinal needle
	Women		Men		Women		Men
	n	%	n	%	n	%	n	%
<40	18	2.2	13	3.4	13	5.8	6	3.9
41–50	75	9.1	19	4.9	13	5.8	8	5.3
51–60	197	23.9	101	26.1	79	34.9	53	35.1
61–70	298	36.1	149	38.5	63	27.9	38	25.2
71–80	190	23.0	87	22.5	48	21.2	38	25.2
>80	47	5.7	18	4.6	10	4.2	8	5.3
Total	825	68.1	387	31.9	226	60.0	151	40.0