Table:
screening strategy
screening examinations
recalled for no cancer
negative biopsies

number
%
number
%

annual 40 to 69
27,064
2,623
9.7
276
1.0

annual 40 to 74
30,439
2,865
9.4
308
1.0

annual 50 to 69
17,405
1,528
8.8
163
0.9

annual 50 to 74
20,805
1,773
8.5
195
0.9

biennial 40 to 74
15,741
1,698
10.8
276
1.8

biennial 50 to 69
8,817
895
10.2
144
1.6

biennial 50 to 74
10,887
1,069
9.8
179
1.6

triennial 50 to 69
6,188
699
11.3
141
2.3

triennial 50 to 74
7,561
826
10.9
173
2.3

annual 40 to 49, biennial 50 to 69
18,537
1,906
10.3
258
1.4

annual 40 to 49, biennial 50 to 74
20,592
2,052
10.0
292
1.4

Statement: the numbers were ighest for annual screening at ages 40 to 74.
Question: what was the per 1,000 numbers for annual screening at ages 40 to 74?
Answer: [308.0]