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. 1998 Oct 17;317(7165):1041–1046. doi: 10.1136/bmj.317.7165.1041

Table.

Mean rates of four marker practices in 13 control, 12 intervention, and all 25 obstetric units at baseline and follow up. Figures are number (percentage) of patients in whom procedure carried out, and 95% confidence interval

Obstetric unit Marker practice
Antibiotics in caesarean sections
Ventouse in instrumental deliveries
Polyglycolic acid in episiotomies
Steroids in preterm deliveries
Overall mean for all practices
No of patients Percentage (95% CI) No of patients Percentage (95% CI) No of patients Percentage (95% CI) No of patients Percentage (95% CI) No of patients Percentage (95% CI)
At baseline
Control 196/364 54 (38 to 70) 212/390 54 (40 to 69)  89/354 25 (2 to 48) 66/84 79 (61 to 96) 563/1192 47 (40 to 55)
Intervention 216/343 63 (46 to 80) 130/360 36 (24 to 48)  30/347  9 (1 to 16) 47/70 67 (55 to 79) 423/1120 38 (28 to 48)
Total 412/707 58 (47 to 69) 342/750 46 (36 to 55) 119/701 17 (5 to 29) 113/154 73 (63 to 84) 986/2312 43 (35 to 50)
At follow up
Control 221/297 74 (63 to 85) 219/390 56 (47 to 65) 144/351  41 (16 to 66) 54/75 72 (61 to 83) 638/1113 57 (49 to 65)
Intervention 224/314 71 (54 to 89) 204/360 57 (45 to 69)  80/340 24 (5 to 42) 43/69 62 (49 to 76) 551/1083 51 (39 to 63)
Total 445/611 73 (63 to 83) 423/750 56 (49 to 64) 224/691  32 (17 to 48)  97/144 67 (59 to 76) 1189/2196  54 (47 to 61)