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Table 2 Risk factors of undiagnosed CSP at the first contact of healthcare providers, Qingyuan, Guangdong, China, 2013 to 2017

From: Risk factors and consequences of undiagnosed cesarean scar pregnancy: a cohort study in China

Determinants Number of undiagnosed CSP Rate of undiagnosed CSP (%) Crude RR (95% CI) Adjusted RR (95% CI)
Age
  < 30 (n = 68) 31 45.59 Reference Reference
  > 30 (n = 127) 50 39.37 0.86 (0.62, 1.21) 1.02 (0.64, 1.64)
Parity
 1 (n = 106) 45 42.45 Reference Reference
  > =2 (n = 89) 36 40.45 0.96 (0.7, 1.31) 0.87 (0.70, 1.09)
Rural residence
 Yes (n = 120) 50 41.33 1.01 (0.8, 1.26) 0.97 (0.73, 1.29)
 No (n = 75) 31 41.33 Reference Reference
Gestational age in week at initial contact with healthcare providers
  < 6 weeks (n = 41) 12 29.27 Reference Reference
 6-7 weeks (n = 92) 33 35.87 1.09 (0.87, 1.38) 1.26 (0.86, 1.85)
  > = 7 weeks (n = 62) 36 58.06 1.59 (1.15, 2.19) 1.82 (0.98, 3.37)
Type of initial health care facilities
 Primary (n = 56) 41 73.21 3.81 (2.35, 6.16) 3.28 (2.06, 5.22)
 Secondary (n = 61) 25 40.98 1.72 (1.21, 2.45) 1.91 (1.16, 3.13)
 Tertiary (n = 78) 15 19.23 Reference Reference