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Table 2 Logistic analysis of factors related to miscarriage

From: Association between the quality of inner cell mass and first trimester miscarriage after single blastocyst transfer

VariableMiscarriage rate, %(n)Crude OR (95% CI)P valueAdjusted OR (95% CI)P value
Maternal age at oocyte retrieval, y 1.054 (1.016–1.093)0.0051.041 (0.991–1.093)0.108
Paternal age, y 1.046 (1.014–1.079)0.0051.012 (0.970–1.056)0.582
Endometrial thickness, mm 0.923 (0.882–0.965)< 0.0010.972 (0.924–1.021)0.258
Cycle type
 Fresh9.3 (153)1 1 
 Frozen16.5 (201)1.931 (1.542–2.417)< 0.0011.605 (1.223–2.104)0.001
Development days of blastocyst
 Day 511.3 (292)1 1 
 Day 621.2 (62)2.103 (1.549–2.855)< 0.0011.519 (1.077–2.144)0.017
Expansion degree
 1 + 215.9 (24)1.838 (0.861–3.925)0.1162.084 (0.956–4.541)0.065
 311.6 (92)1.280 (0.663–2.471)0.4611.395 (0.712–2.735)0.332
 412.5 (227)1.392 (0.737–2.630)0.3081.608 (0.839–3.082)0.153
 5 + 69.3 (11)1 1 
ICM grade
 A11.7 (124)1 1 
 B12.7 (230)1.104 (0.875–1.394)0.4040.859 (0.642–1.149)0.306
TE grade
 A9.8 (46)1 1 
 B11.8 (201)1.230 (0.877–1.724)0.2301.207 (0.827–1.762)0.328
 C15.3 (107)1.659 (1.149–2.396)0.0071.509 (0.953–2.389)0.079