Table 2.

 Costs and outcomes per woman by trial arm

	Cytological surveillance	Immediate treatment	Biopsy and recall
Mean cost (£) by expenditure category:
Smear tests	101.9	68.7	71.5
Colposcopy without treatment	30.7	87.7	149.5
Colposcopy with treatment	25.1	106.3	40.7
Hospital visits	7.3	6.8	8.5
Complications	1.5	2.5	2.5
Time and travel (non-NHS)	59.1	107.1	94.2
NHS costs (£):
Mean	166.5	272.1	272.4
Median	89.5	231.4	220.7
IQR	89.5-148.2	172.7-313.5	172.6-319.5
Mean, discounted	150.2	240.3	241.1
Skew coefficient	2.80	3.64	2.88
Social costs (£):
Mean	225.6	379.1	366.6
Median	130.6	343.5	305.9
IQR	130.6-209.4	264.7-428.0	247.7-424.7
Mean, discounted	204.4	339.9	327.5
Skew coefficient	2.62	3.37	2.77
Outcomes (QALYs):
Mean	2.225	2.243	2.277
Median	2.348	2.348	2.383
IQR	2.120-2.500	2.120-2.500	2.165-2.500
Mean, discounted	2.129	2.149	2.181
Skew coefficient	−2.83	−2.22	−2.92
Mean discounted costs (£) per CIN case detected:
NHS perspective	1241	1073	1256
Social perspective	1689	1517	1706

QALY=quality adjusted life year.