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Table 5 Percentile ranks (point and 95% interval estimates) corresponding to MDAS raw scores for females 55 plus

From: UK population norms for the modified dental anxiety scale with percentile calculator: adult dental health survey 2009 results

   95% CI
Raw score Percentile rank Lower Upper
5 11 0.5 20.8
6 24 20.7 28.2
7 32 27.3 37.6
8 40 36.6 43.8
9 46 42.5 50.0
10 53 48.7 57.0
11 59 55.7 62.3
12 64 60.8 67.7
13 69 66.2 72.3
14 73 70.7 75.8
15 77 74.2 79.6
16 81 78.2 82.7
17 83 81.3 85.5
18 86 84.1 87.9
19 88 86.5 89.8
20 90 88.5 92.0
21 92 90.9 93.9
22 94 92.8 95.1
23 95 94.0 96.4
24 96 95.5 97.2
25 98 96.6 99.9