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. 2016 May 28;22(20):4918–4925. doi: 10.3748/wjg.v22.i20.4918

Table 1.

Patient characteristics n (%)

PD (n = 22)
LHM (n =142)
POEM (n =36)
Factor n Summary n Summary n Summary P value
Age at diagnosis (yr) 22 47.5 ± 17.0 142 45.8 ± 15.6 36 52.6 ± 17.2 0.078a
Age at current treatment (yr) 22 50.3 ± 17.9 142 46.5 ± 15.73 36 55.4 ± 16.82 0.013a
Gender 22 142 36 0.19c
Female 11 (50.0) 71 (50.0) 12 (33.3)
Male 11 (50.0) 71 (50.0) 24 (66.7)
Ethnicity 22 141 36 0.85d
White 17 (77.3) 118 (83.7) 31 (86.1)
Black 4 (18.2) 19 (13.5) 4 (11.1)
Other 1 (4.5) 4 (2.8) 1 (2.8)
BMI (kg/m2) 22 27.1 ± 6.9 142 26.0 ± 5.13 36 29.1 ± 5.92 0.012a
Achalasia sub-type 14 120 34 0.023d
Subtype 1 5 (35.7) 30 (25.0) 13 (38.2)
Subtype 2 6 (42.9) 82 (68.3) 18 (52.9)
Subtype 3 2 (14.3) 1 (0.83) 3 (8.8)
Achalasia variant 1 (7.1) 7 (5.8) 0 (0.0)
Prior treatments
Received any prior treatment 22 15 (68.2) 140 62 (44.3)3 36 26 (72.2)2 0.003c
Months from last to current treatment 14 17.7 [2.3, 87.5] 54 6.3 [3.2,28.5] 25 14.7 [6.4,20.2] 0.29b
Botulinium toxin injection 22 1 (4.5) 140 16 (11.4) 36 8 (22.2) 0.11c
PD 22 9 (40.9)2 140 19 (13.6)13 36 11 (30.6)2 0.002c
LHM 22 7 (31.8)2 140 1 (0.71)13 36 10 (27.8)2 < 0.001c
Botulinum toxin injection and regular endoscopic balloon dilation 22 2 (9.1) 140 1 (0.71) 36 0 (0.0) 0.050d
Regular endoscopic balloon dilation 22 3 (13.6) 140 34 (24.3)3 36 2 (5.6)2 0.031c
1

Significantly different from PD;

2

Significantly different from LHM;

3

Significantly different from POEM. Values presented as Mean ± SD, Median [P25, P75] or N (column %). P-value: a = ANOVA, b = Kruskal-Wallis test, c = Pearson's χ2 test, d = Fisher's Exact test. PD: Pneumatic dilation; LHM: Laparoscopic Heller myotomy; POEM: Peroral endoscopic myotomy.