38 Chapter 2 Supplementary Figure 2. Scaled Schoenfeld residuals plot for the basic Cox model using log-transformed time. Log hazard ratio for ongoing pregnancy estimated over three years follow-up of oil-based versus water-based contrast shown by Scaled Schoenfeld residuals plot for the basic Cox model using log-transformed time. Dotted lines represent the 95% confidence interval. Test for non-proportional hazards over time: p=0.02. Supplementary Figure 3. Scaled Schoenfeld residuals plot for the basic Cox model using regular time in a subgroup of women who experienced pain (visual analogue scale of 6 points or more) during HSG. Log hazard ratio for ongoing pregnancy estimated over three years follow-up of oil-based versus waterbased contrast shown by Scaled Schoenfeld residuals plot for the basic Cox model using regular time in a subgroup of women who experienced pain during HSG. Dotted lines represent the 95% confidence interval. Test for non-proportional hazards over time: p=0.88.
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