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Table 1 Treatment outcomes associated with discontinuation

From: Socioeconomic disparities in orthodontic treatment outcomes and expenditure on orthodontics in England’s state-funded National Health Service: a retrospective observational study

Outcomea

Percentage (relative frequency)

NHS expenditure (GBP)

All

n = 24,501

Males

n = 10,571

Females

n = 13,930

Discontinuation

7.6

(1856/24501)

9.0

(951/10571)

6.5

(905/13930)

2,300,764

 Residual need

16.3

(303/1856)

14.4

(137/951)

18.3

(166/905)

 

 No residual need

20.1

(373/1856)

20.6

(196/951)

19.6

(177/905)

 

 Incomplete IOTN

63.6

(1180/1856)

65.0

(618/951)

62.1

(562/905)

 

Completion

73.1

(17,899/24501)

71.6

(7574/10571)

74.1

(10,325/13930)

22,186,773

 Residual need

5.4

(961/17899)

5.7

(431/7574)

5.1

(530/10325)

 

 No residual need

75.3

(13,482/17899)

74.8

(5662/7574)

75.7

(7820/10325)

 

 Incomplete IOTN

19.3

(3456/17899)

19.6

(1481/7574)

19.1

(1975/10325)

 

Missing outcome record

19.4

(4746/24501)

19.4

(2046/10571)

19.4

(2700/13930)

5,890,206

  1. GBP Great Britain Pound, IOTN Index of Orthodontic Treatment Need, NHS National Health Service
  2. aAn outcome could be specified as either treatment discontinuation or treatment completion