Example sentences of "[n mass] at 24 [noun pl] " in BNC.

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1 These were all detected between 12 and 42 months after trial entry corresponding , by LTA , to 0% at six months , 8.9 ( 3.2 ) % at 12 months , 14.3 ( 4.0 ) % at 18 months , 22.9 ( 4.9 ) % at 24 months , 29.2 ( 5.7 ) % at 36 months , and 33.9 ( 7.0 ) % at 42 and subsequent months ( Fig 2 ) .
2 Ultrasound alone — A total of 24 recurrences was recognised by ultrasonagraphy corresponding to actuarial rates of 8.5 ( 3.1 ) % at six months , 14.9 ( 3.9 ) % at 12 months , 20.5 ( 4.6 ) % at 18 months , 23.4 ( 4.9 ) % at 24 months , 34.4 ( 6.2 ) % at 36 months , and 39.1 ( 7.2 ) % at 42 months , and thereafter ( Fig 2 ) .
3 Either method — If recurrence is defined as stone detection by either imaging technique , the total number was 26 which corresponds , by LTA , to 8.5 ( 3.1 ) % at six months , 17.4 ( 4.2 ) % at 12 months , 22.8 ( 4.7 ) % at 18 months , 25.7 ( 5.0 ) % at 24 months , 36.4 ( 6.2 ) % at 36 months , and 41.0 ( 7.2 ) % at 42 and subsequent months .
4 In those taking ursodeoxycholic acid , this corresponds , by LTA , to 0% at 6 and 12 months , 4.8 ( 4.6 ) % at 18 months , 14.8 ( 7.9 ) % at 24 months , and 21.9 ( 9.9 ) % at 36 and subsequent months .
5 In the placebo group , the recurrence rates were 15.4 ( 7.1 ) % at 12 and 18 months , 20.1 ( 8.1 ) % at 24 months , and 27.4 ( 10.1 ) % at 36 months and thereafter .
6 In those taking the diet , they were 9.7 ( 5.3 ) % at 12 months , 19.4 ( 7.1 ) % at 18 months , 29.9 ( 8.4 ) % at 24 months , 34.9 ( 9.2 ) % at 36 months , and 45.8 ( 12.4 ) % at 42 and subsequent months .
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