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Table 1 Description of the study population

From: Continuous versus discontinuous suture in perineal injuries produced during delivery in primiparous women: a randomized controlled trial

VariablesContinuous suture
n (70)
Interrupted suture
n (64)
P value
Age (years), m (SEM)a30.98 ± 0.6330.76 ± 0.680.813
Civil status  0.047
 Single, n (%)7 (10.00)17 (26.56) 
 Married, n (%)47 (67.14)38 (59.38) 
 Stable relationship, n (%)15 (21.43)9 (14.06) 
 Divorced, n (%)1 (1.43)0 (0.00) 
Education level  0.797
 Incomplete primary, n (%)2 (2.86)1 (1.56) 
 Primary, n (%)3 (4.29)3 (4.69) 
 Incomplete secondary, n (%)2 (2.86)4 (6.25) 
 Secondary, n (%)17 (24.29)18 (28.13) 
 Higher secondary education, n (%)19 (27.14)12 (18.75) 
 University, n (%)27 (38.57)26 (40.63) 
BMIb, m (SEM)28.19 ± 0.5127.27 ± 0.460.185
Previous illness, Yes, n (%)6 (8.57)8 (12.50)0.575
Exercise during pregnancy, Yes, n (%)39 (55.71)34 (53.13)0.862
Perineal massage pre-labor, Yes, n (%)15 (21.43)12 (18.75)0.830
Attendance during pregnancy at an education course on pregnancy, delivery and newborn care, Yes, n (%)38 (54.29)47 (73.44)0.031
Gestational age at delivery (weeks), m (SEM)39.57 (0.13)39.78 (0.14)0.275
Start of labor  0.473
 Spontaneous, n (%)48 (68.57)40 (62.50) 
 Induced, n (%)22 (31.43)24 (37.50) 
Epidural analgesia, Yes, n (%)56 (80.00)53 (82.81)0.825
Duration of the first stage of labor (minutes), m (SEM)314.80 (22.87)342.72 (21.10)0.373
Duration of the second stage of labor (minutes), m (SEM)85.61 (6.29)96.64 (8.23)0.284
Duration of the third stage of labor (minutes), m (SEM)9.71 (1.06)9.70 (1.02)0.994
Type of perineal lesion  0.387
 Episiotomy, n (%)32 (45.71)35 (54.69) 
 2nd degree tear, n (%)38 (54.29)29 (45.31) 
Weight of newborn (grams), m (SEM)3252.6 (41.8)3185.1 (50.5)0.301
  1. a m (SEM): mean (standard error of the mean)
  2. b BMI (body mass Index) = Kg/m2