Table 2.

Anorectal Manometry Results According to the London Classification

London classification diagnoses	All patients N = 479	Arab Israeli n = 87 (18.2%)	Former Soviet Union n = 76 (15.9%)	Jewish Israeli n = 316 (66.0%)	P-value
Disorders of rectoanal inhibitory reflex
Rectoanal areflexia	54 (11.3)	6 (6.9)	7 (9.2)	41 (13.0)	0.247
Disorders of anal tone and contractility
Max resting pressure	62.6 ± 28.1	52.2 ± 24.7	65.1 ± 29.4	64.9 ± 28.0
Max squeeze pressure	127.2 ± 65.0	82.2 ± 43.7	146.6 ± 65.3	134.8 ± 64.6
Combined anal hypotension and hypocontractility	113 (23.6)	38 (43.7)	15 (19.7)	60 (19.0)	< 0.001
Anal hypotension with normal contractility	36 (7.5)	0 (0.0)	9 (11.8)	27 (8.5)	0.007
Anal normotension with hypocontractility	174 (36.3)	37 (42.5)	20 (26.3)	117 (37.0)	0.090
Disorders of rectoanal coordination (n = 357)
Dyssynergia	238 (66.7)	45 (54.9)	37 (66.7)	156 (69.6)	0.036
Poor propulsion	12 (3.4)	5 (6.1)	2 (3.9)	5 (2.2)	0.353
Poor propulsion and dyssynergia	22 (6.2)	4 (4.9)	2 (3.9)	16 (7.1)	0.628
Disorders of rectal sensation
Rectal hyposensation	197 (41.1)	39 (44.8)	36 (47.4)	122 (38.6)	0.276
Borderline rectal hyposensation	118 (24.6)	17 (19.5)	20 (26.3)	81 (25.6)	0.485
Either rectal hyposensation or borderline hyposensation	315 (65.8)	56 (64.4)	56 (73.7)	203 (64.4)	0.288
Rectal hypersensation	2 (0.4)	0 (0.0)	0 (0.0)	2 (0.6)	-
Overall London classification
Normal exam per London classification	22 (4.6)	1 (1.1)	1 (1.3)	20 (6.3)	0.048
High pressure zone
High pressure zone length	2.54 ± 0.82	2.41 ± 0.76	2.49 ± 0.96	2.59 ± 0.80
Short high pressure zone	208 (43.4)	45 (51.7)	35 (46.1)	128 (40.5)	0.157

Data are presented as n (%) or mean ± SD.

P < 0.05 was considered statistically significant.