Notes: ¹ Significant p value (p<0.05) in the comparison IOL at 40 GW vs SOL; ² Significant p value (p<0.05) in the comparison IOL at 41 GW vs SOL;³ Significant p value (p<0.05) in the comparison IOL at 40 GW vs IOL at 41 GW; * Mid-level staff defined as Senior House Officer or Registrar.

Abbreviations: BMI= body mass index; GW= gestational weeks; IOL= induction of labour; SOL= spontaneous onset of labour.

Table 2. Adjusted odds ratios for negative birth outcomes by type of labour