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. 2023 Jan 9;23:13. doi: 10.1186/s12884-022-05302-w

Table 2.

Sample characteristics (n = 258)

Characteristics Teach-back group n = 128 n (%) Control group
n = 130 n (%)
No. (%)
Statistic P value
Age [years, M (P25, P75)] 29(27.25,33) 32(28,32) − 0.489a 0.625
Ethnic group
Han people 126(98.4) 126(96.9) 0.651b 0.420
Minority 2(1.6) 4(3.1)
Marital status
Married 127(99.2) 127(97.7) 0.985b 0.321
Other 1(0.8) 3(2.3)
Education
Primary and below 1(0.8) 0 −1.261 a 0.207
Junior school 16(12.5) 17(13.1)
High school 20(15.6) 11(8.5)
College 82(64.1) 90(69.2)
Undergraduate and above 9(7.0) 12(9.2)
Residential area
Rural area 11(8.6) 16(12.3) 1.551b 0.461
County 19(14.8) 23(17.7)
Urban 98(76.6) 91(70)
Occupational status
Unemployed 44(34.4) 41(31.5) 0.235b 0.628
Employed 84(65.6) 89(68.5)
Monthly family income (RMB)
< 5000 36(28.1) 32(24.6) −0.054a 0.957
~ 8000 46(35.9) 50(38.5)
~ 15,000 22(17.2) 35(26.9)
≥15,000 24(18.8) 13(10.0)
Insurance type
Private insurance 31(24.2) 20(15.4) 3.400b 0.334
New rural cooperative medical system 19(14.8) 21(16.2)
Occupational health insurance 77(60.2) 87(66.9)
Other 1(0.8) 2(1.5)
BMI before pregnancy (mean ± SD) 20.925 ± 2.235 21.257 ± 2.462 1.135c 0.258
Normal (18.5 ≤ BMI < 25) 101(78.9) 103(79.2) 0.004b 0.949
Abnormal (BMI < 18.5 or BMI ≥ 25) 27(21.1) 27(20.8)
Parity
Unipara 77(60.2) 74(56.9) 0.278b 0.598
Multipara 51(39.8) 56(43.1)
History of scarred uterus
No 100(78.1) 102(78.5) 0.004b 0.948
Yes 28(21.9) 28(21.5)
Experience with any pregnancy and childbirth-related educational sessions before participating in the current study
No 77(60.2) 82(63.1) 0.233b 0.630
Yes 51(39.8) 48(36.9)
Number of terminations [M (P25, P75)] 0(0,1) 0(0,1) −0.244a 0.807
Birth modes
Spontaneous labor 69(53.9) 66(50.8) 0.254b 0.614
Caesarean section 59(46.1) 64(49.2)

a Mann–Whitney rank test

b Chi-squared test

c t-test