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Table 1 Oral Health indices. The UNRWA oral health surveys 2011 and 2016

From: Oral health status and caries trend among 12-year old Palestine refugee students: results from the UNRWA’s oral health surveys 2011 and 2016

 

Survey 2011

N = 2781

Survey 2016a

N = 1550

p-value*

N

N

Present Teeth

< 0.01**

 Median (min;max)

28 (15–28)

26 (12–28)

 

DS

 Median (min;max)

2 (0–40)

2 (0–32)

 

 Mean (Standard Deviation, SD)

3.20 (4.23)

3.29 (3.99)

0.08**

  = 0 (%)

889 (32.0)

474 (30.6)

0.35

  > 0 (%)

1892 (68.0)

1076 (69.4)

 

MS

 Median (min;max)

0 (0–15)

0 (0–10)

 

 Mean (SD)

0.14 (0.90)

0.22 (1.12)

0.01**

  = 0 (%)

2708 (97.4)

1487 (95.9)

0.01

  > 0 (%)

73 (2.6)

63 (4.1)

 

FS

 Median (min;max)

0 (0–18)

0 (0.12)

 

 Mean (SD)

0.58 (1.55)

0.48 (1.34)

0.02**

  = 0 (%)

2189 (78.7)

1267 (81.7)

0.02

  > 0 (%)

592 (21.3)

283 (18.3)

 

FT

 Median (min-max)

Not collected

(0–11)

 

 Mean (SD)

0.39 (0.98)

 

  = 0 (%)

1267 (81.7)

 

  > 0 (%)

283 (18.3)

 

DMFS

 Median (min;max)

2 (0–40)

3 (0–32)

 

 Mean (SD)

3.93 (4.71)

3.99 (4.59)

0.45**

  = 0 (%)

747 (26.9)

421 (27.2)

0.83

  > 0 (%)

2034 (73.1)

1129 (72.8)

 

DMFT

 Median (min-max)

Not collected

2 (0–21)

 

 Mean (SD)

2.52 (2.51)

 

  = 0 (%)

421 (27.2)

 

  > 0 (%)

1129 (72.8)

 

SEALANTS

 Median (min;max)

0 (0–10)

0 (0–9)

 

 Mean (SD)

0.20 (0.89)

0.38 (1.32)

< 0.01**

  = 0 (%)

2603 (93.6)

1398 (90.2)

< 0.01

  > 0 (%)

178 (6.4)

152 (9.8)

 
  1. *Pearson’s Chi Square test otherwise specified; **Mann-Whitney non parametric test; a data from Syria excluded