Effects of Continuous Use of Entonox in Comparison with Intermittent Method on Obstetric Outcomes: A Randomized Clinical Trial

Table 1

Demographic characteristics of the participants.

Characteristics	Continuous	Intermittent	value
Age (mother)	24.7 ± 4.0	24.8 ± 5.7	0.8
Age (husband)	28.9 ± 4.7	30.3 ± 5.9	0.2
Body mass index (kg/m^2)	24.2 ± 2.9	24.8 ± 3.0	0.3
Educational level (mother)
Primary (%)	60%	66%	0.5
Secondary (%)	14%	16%
University (%)	26%	10%
Educational level (husband)
Primary (%)	48%	58%	0.7
Secondary (%)	52%	42%
Annual household income
Less than 200 dollars	72%	88%	0.3
More than 200 dollars	28%	12%
Parity
Primipara (%)	54%	58%	0.3
Multipara (%)	46%	42%
Gestation (wk)	40.3 ± 1.2	40.9 ± 1.7	0.2
Birth weight	3245.4 ± 436.9	3097.4 ± 357.1	0.06