Table 3

Median patient scores to the 100 mm visual analogue scale (VAS) for pain during intrauterine device (IUD) placement in the Bioceptive suction cervical retractor (SCR) study

VariableStage 2 median scores (IQR) (n=10)Stage 3p value*
Intervention† median scores (IQR) (n=11)Control† median scores (IQR) (n=13)
VAS 1‡0 (0,0)3 (1,4)2 (1,4)0.36
VAS 21 (0,3)11.5 (7,15)24 (5,35)0.58
VAS 3§5 (5,18)31 (10,48)57 (45,64)0.13
VAS 416 (10,32)27.5 (16,47)48 (28,59)0.18
VAS 546 (7,66)48 (31,68)61 (47,75)0.40
VAS 68 (0,23)32 (22,37)40 (31,51)0.34
VAS 7N/A17.5 (9,27)24 (6,41)0.85
VAS-FUP¶N/A0 (0,0)0 (0,25)0.62
  • *p values are output from Wilcoxon rank sum tests in Stage 3.

  • †Intervention: women randomised to receive their IUD using the Bioceptive SCR device for cervical traction. Control: women who received their IUD using the single-tooth tenaculum.

  • ‡The 100 mm VAS assesses pain during IUD insertion, with 0 being ‘no pain’ to 100 being the ‘worst pain imaginable’.

  • §Two patients randomised to the SCR group were omitted from the analysis due to them not receiving their IUDs with the SCR device.

  • ¶Follow-up occurred the day after the procedure. Patients in the Stage 2 did not receive next-day follow-up.

  • FUP, follow-up; IUD, intrauterine device.