Table 1

Sensitivity analyses for measured blood loss ≥ 1000 ml (severe post-partum haemorrhage, or SPPH)

Assumed bias introduced
in SPPH by unblinding
due to shivering (mls)
Group
No. of women
No. of cases
%
RR
95% CI

500
Misoprostol
9214
295
3.2
1.23
(1.04 to 1.45)

Oxytocin
9228
241
2.6









400
Misoprostol
9214
307
3.3
1.27
(1.07 to 1.49)

Oxytocin
9228
243
2.6









300
Misoprostol
9214
313
3.4
1.29
(1.09 to 1.52)

Oxytocin
9228
243
2.6









200
Misoprostol
9214
322
3.5
1.28
(1.09 to 1.51)

Oxytocin
9228
251
2.7









100
Misoprostol
9214
334
3.6
1.31
(1.11 to 1.53)

Oxytocin
9228
256
2.8









0
Misoprostol
9214
366
4.0
1.39
(1.19 to 1.63)

Oxytocin
9228
263
2.9









-100
Misoprostol
9214
401
4.4
1.50
(1.29 to 1.75)

Oxytocin
9228
267
2.9









-200
Misoprostol
9214
453
4.9
1.64
(1.41 to 1.90)

Oxytocin
9228
277
3.0









-300
Misoprostol
9214
499
5.42
1.74
(1.51 to 2.00)

Oxytocin
9228
288
3.12









-400
Misoprostol
9214
591
6.41
1.94
(1.70 to 2.22)

Oxytocin
9228
305
3.31









-500
Misoprostol
9214
688
7.47
2.10
(1.85 to 2.39)

Oxytocin
9228
328
3.55



Piaggio et al. BMC Medical Research Methodology 2003 3:19   doi:10.1186/1471-2288-3-19