Table 2: Comparison of age and sex distribution of the patients with Jackhammer esophagus (JE) and the other motility disorders diagnosed during HRM.

JENormalAchalasiaIneffective motilityAbsent contractilityEGJ outflow obstructionCombination of the other HRM diagnosis

Mean age, years62 1357 1559 1954 1956 1862 1257 16
(standard deviation)
 p-valueN/A0,030,32 0,010,060,950,05
(compared to JE)

Sex distribution






Females89%64%40%62%60%65%62%
Males11%36%60%38%40%35%38%
 p-valueN/A 0.01 0.01 0.01 0.01 0.01 0.01
(compared to JE)