42 Chapter 2 Table S1 Interobserver agreement in various FIGO components of antenatal CTGs between (values off the diagonal) and within (values on the diagonal) professional groups using proportions of agreement. Proportions of agreement (95% CI) Primary care midwives Hospital-based midwives Residents Obstetricians Baseline heart frequency Primary care midwives 0.93 (0.83-0.97) 0.92 (0.84-0.96) 0.93 (0.86-0.97) 0.93 (0.84-0.97) Hospital-based midwives x 0.91 (0.81- 0.96) 0.94 (0.87-0.98) 0.94 (0.85-0.98) Residents x x 0.98 (0.92-1.00) 0,98 (0.92-1.00) Obstetricians x x x 0.98 (0.88-1.00) Variability Primary care midwives 0.85 (0.74-0.92) 0.86 (0.76-0.92) 0.87 (0.78-0.93) 0.77 (0.65-0.86) Hospital-based midwives x 0.85 (0.74-0.92) 0.89 (0.80-0.94) 0.80 (0.68-0.88) Residents x x 0.88 (0.79-0.94) 0.78 (0.66- 0.86) Obstetricians x x x 0.70 (0.54-0.82) Accelerations Primary care midwives 0.81 (0.69-0.89) 0.81 (0.70-0.88) 0.89 (0.80-0.94) 0.86 (0.75-0.93) Hospital-based midwives x 0.76 (0.64-0.85) 0.84 (0.74-0.90) 0.82 (0.70-0.90) Residents x x 0.90 (0.81-0.95) 0.88 (0.78-0.94) Obstetricians x x x 0.82 (0.67-0.91) Decelerations Primary care midwives 0.85 (0.74-0.92) 0.86 (0.76-0.92) 0.83 (0.73-0.90) 0.87 (0.76-0 .93) Hospital-based midwives x 0.84 (0.73-0.91) 0.84 (0.75-0.91) 0.85 (0.73-0.92) Residents x x 0.84 (0.74-0.91) 0.86 (0.76-0.92) Obstetricians x x x 0.87 (0.73-0.94) Contractions Primary care midwives 0.70 (0.57-0.80) 0.71 (0.60-0.80) 0.68 (0.57-0.77) 0.64 (0.51-0.75) Hospital-based midwives x 0.80 (0.68-0.88) 0.84 (0.75-0.91) 0.78 (0.66-0.86) Residents x x 0.89 (0.79-0.94) 0.84 (0.73-0.91 Obstetricians x x x 0.77 (0.62-0.87) CTG, cardiotocography; FIGO, International Federation of Gynecology and Obstetrics; CI, confidence interval.
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