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Table 3 Statistically significant socio-economic, socio-demographic, school type and geographical-related determinants contributing to dental caries

From: Determinants of dental caries in children in the Middle East and North Africa region: a systematic review based on literature published from 2000 to 2019

Determinants

Association: positive ( +), negative (−)a

Author study design

Country

Type of dentition

N

Age group (gender)

Study setting

Scoring system

Type/s of statistical analysis

Dental caries/scoring results

Mother’s attributes

Mother’s education

Abu Hamila [21] (CS)

Egypt

Primary

560

1–3.5 y

(M, F)

Clinic

WHO

(dmft)

Chi-Square

ECCP = 69.6%

dmft = 2.1–7.6

Mother’s education

Bashirian et al. [26] (CS)

Iran

Primary

Permanent

988

7–12 y

(M, F)

School

WHO

(dmft, DMFT)

ANOVA

DCP = 80.36%

dmft = 3.61

DMFT = 0.79

Mother’s education

Shaghaghian et al. [37] (CS)

Iran

Primary

396

3–6 y

(M, F)

School

WHO

(dmft)

Multivariate analysis

DCP = 69.9%

dmft = 3.88

Mother’s education

Haghdoost et al. [29] (CS)

Iran

Primary

Permanent

8725

6 y

(M, F)

Clinic

WHO

Linear regression,

Logistic regression

DCP = 87%

Mother’s education

Khani-Varzegani et al. [31](CS)

Iran

Primary

756

4–7 y

(M, F)

School

WHO

(dmft)

Multivariate analysis

dmft median (25th–75th percentile):

All = 4(2–8)

Males = 4(2–9)

Females = 5(2–8)

Mother’s education (low levels)

 + 

Alhabdan et al. [60] (CS)

KSA

Primary

578

6–8 y

(M, F)

School

WHO

(dmft)

Adjusted odds ratios

Multivariate model logistic regression

DCCP = 83%

dmft 4.20 (SD 2.96)

Mother’s education

Al-Meedani [58] (CS)

KSA

Primary

388

3–5 y

(M, F)

School

WHO

(dmft, dmfs)

Chi-Square

Z-test

DCP = 69%

dmft = 3.4

dmfs = 6.9

Mother’s education

Quadri et al. [67] (CS)

KSA

Primary

Permanent

853

6–15 y

(M, F)

School

WHO

(dft, DMFT)

Multi regression

DCP = 91.3%

Mother’s education

Al-Malik et al. [57] (CS)

KSA

Primary

987

2–5 y

(M, F)

School

BASCD

(dmft, dmfs)

Stepwise multiple logistic regression

DCP = 73%

Rampant caries = 43%

dmft = 4.8

dmfs = 12.7

Mother’s education (number of filled teeth in the child)

 + 

Azizi et al. [52] (CS)

Palestine

Primary

1376

4–6 y

(M, F)

Clinic

WHO

(dmft)

Not indicated

DCP = 76%

dmft = 2.46

Mother’s education

Ozer et al. [83] (CS)

Turkey

Primary

226

3–6 y

(M, F)

School

WHO

(dmft)

AAPD

Bivariate analysis

ECCP = 46.9%

dmft = 2.87

Mother’s education

Namal et al. [81] (CS)

Turkey

Primary

542

5–6 y

(M, F)

School

WHO

(dmft)

Multiple logistic regression

DCP = 76.8%

dmft = 3.74 (3.49)

SiC = 7.75 (2.56)

Mother’s education

Elamin et al. [89] (CS)

UAE

Primary

186

1.5–4 y

(M, F)

School

WHO

(dmft)

T-test,

Pearson-s

DCP: 41%

dmft:1.7 ± 2.81

Mother’s occupation (Employed)

 + 

Abu Hamila [21] (CS)

Egypt

Primary

560

1–3.5 y

(M, F)

Clinic

WHO

(dmft)

Chi-Square

ECCP = 69.6%

dmft = 2.1–7.6

Mother’s occupation (not employed)

 + 

Amin & Al-Abad [62] (CS)

KSA

Permanent

1115

10–14 y

(M)

School

WHO

Stepwise logistic regression

DCP = 68.9%

Mother’s caries experience

 + 

Kabil & Eltawil [18] (CS)

Egypt

Primary

140

2–4 y

(M, F)

Clinic

WHO

(DMFT)

AAPD

Logistic regression

DMFT = 9.96

Mother’s current caries experience

 + 

Kabil & Eltawil [19] (CS)

Egypt

Primary

108

2–4 y

(M, F)

Clinic

WHO

Logistic regression

ECCP = 57% (2–3 y), 73% (3–4 y)

Father’s attributes

Father’s education (CAST score of ≥ 3 in primary molar teeth)

Babaei et al. [24] (CS)

Iran

Primary & Permanent

molar teeth

739

6–7 y

(M, F)

School

CAST indexb

Multivariate logistic regression

Permanent molars:

Healthy status in

89.3–93.7% of the teeth

Primary molars:

Morbidity status in 25.3 to 31.2% of the teeth

Serious morbidity status with Pulp involvement in 2.9–10.5% of the teeth and abscess/fistula in < 1% of the teeth

Father’s education

Bayat-Movahed et al. [27] (CS)

Iran

Primary

Permanent

18,946

3,6,9,12 y

(M, F)

Community health centres

WHO

(dmft, DMFT)

T-test,

Z test

dmft = 1.9 (3 y)

dmft = 5.0 (6 y)

dmft = 3.6 (9 y)

dmft = 0.6 (12 y)

DMFT = 0.2 (6 y)

DMFT = 0.9 (9 y)

DMFT = 1.9 (12 y)

Father’s Education

Huew et al. [50] (CS)

Libya

Permanent

791

12 y

(M, F)

School

WHO

(DMFT, DMFS)

Multivariate analysis

DCP = 57.8%

DMFT = 1.78

DMFS = 2.39

Father’s Education

Unclear

Khadri et al. [90] (CS)

UAE

Permanent

803

11–17 y

(M, F)

School

WHO

(DMFT)

Multivariate regression

DCP = 75%

DMFT = 3.19 (SD 2.9)

Father’s Occupation

 + 

Shaghaghian et al. [37] (CS)

Iran

Primary

396

3–6 y

(M, F)

School

WHO

(dmft)

Multivariate analysis

DCP = 69.9%

dmft = 3.88

Father’s occupation (Low educational occupations)

 + 

Namal et al. [80] (CS)

Turkey

Primary

598

3–6 y

(M, F)

School

WHO (dft)

Multiple logistic regression

DCP = 74.1%

Father’s occupation (Self-employment)

 + 

Amanlou et al. [22] (CS)

Iran

Primary

Permanent

205

3–6 y

(M, F)

School

WHO

(DMFT)c

Stepwise multiple regression

DCP = 49.3%

DMFT = 0.99 (SD 0.13)

Parents attributes

Parents’ education (primary dentition)

Abbass et al. [20] (CS)

Egypt

Primary

Mixed

Permanent

369

3–18 y

(M, F)

Clinic

WHO

(dmft, deft, DMFT)

Kruskal–Wallis,

Spearman’s

DCP = 74%

dmft = 3.23 (SD 4.07)

deft = 4.21 (SD 3.21)

DMFT = 1.04 (SD 1.56)

Parents’ education level

-

Sistani et al. [38] (CS)d

Iran

Primary

2080

3–6 y

(M, F)

School

WHO

(dmft)

T-test,

ANOVA

ECCP varied between 51.1 and 71.9% during 2007–2015

dmft = 4.01 (SD 3.89)

Socio-economic factorse

 + 

Ahmed et al. [41] (CS)

Iraq

Permanent

392

12 y

(M, F)

School

WHO

(DMFT)

ANOVA

DCP = 62%

DMFT = 1.7

Parents’ Education

Al-Mendalawi & Karam, 2014 [40] (CC)

Iraq

Primary

684

 < 6 y

(M, F)

Clinic

WHO

(DMFT)f

Chi-Square

DMFT = 2.03

Parents Education

Rajab et al. [42] (CS)

Jordan

Primary

Permanent

2496 (6 y)

2560 (12 y)

6 y, 12 y

(M, F)

School

WHO

(dmft, DMFT)

Multivariate analysis linear regression

DCP = 76.4% (6 y)

DCP = 45.5% (12 y)

dmft = 3.3 (6 y)

DMFT = 1.1 (12 y)

Parents’ employment status

Sistani et al. [38] (CS)d

Iran

Primary

2080

3–6 y

(M, F)

School

WHO

(dmft)

T-test,

ANOVA

ECCP varied between 51.1 and 71.9% during 2007–2015

dmft = 4.01 (SD 3.89)

Parents’ employment status

Khodadadi et al. [32] (CS)

Iran

Primary

384

21–84 m

(M, F)

Not specified

WHO

(dmft)

Multiple linear regression

dmft = 8.2

Socio-economic statusg

Abbass et al. [20] (CS)

Egypt

Primary

Mixed

Permanent

369

3–18 y

(M, F)

Clinic

WHO

(dmft, deft, DMFT)

Kruskal–Wallis,

Spearman’s

DCP = 74%

dmft = 3.23 (SD 4.07)

deft = 4.21 (SD 3.21)

DMFT = 1.04 (SD 1.56)

Family affluent scale

Khani-Varzegani et al. [31] (CS)

Iran

Primary

756

4–7 y

(M, F)

School

WHO

Multivariate analysis

dmft median (25th–75th percentile):

All = 4(2–8)

Boys = 4(2–9)

Girls = 5(2–8)

Income

Al-Mendalawi & Karam [40] (CC)

Iraq

Primary

684

 < 6 y

(M, F)

Clinic

WHO

(DMFT)f

Chi-Square

DMFT = 2.03

Low family income

 + 

Alhabdan et al. [60] (CS)

KSA

Primary

578

6–8 y

(M)

School

WHO

(dmft)

Adjusted Odds Ratios,

Multivariate model logistic regression

DCCP = 83%

dmft 4.20 (SD 2.96)

Lack of dental insurance-

 + 

Alhabdan et al. [60] (CS)

KSA

Primary

578

6–8 y

(M)

School

WHO

(dmft)

Adjusted Odds Ratios,

Multivariate model logistic regression

DCCP = 83%

dmft 4.20 (SD ± 2.96)

Socio-Economic Statush

Alghamdi & Almahdy [59] (CS)

KSA

Permanent

610

14–16 y

(M)

School

Not specified

(DMFT)

Logistic regression

DCP = 54.1%

Socio-Economic Statusi

Rajab et al. [42] (CS)

Jordan

Primary

Permanent

2496 (6 y)

2560 (12 y)

6 y, 12 y

(M, F)

School

WHO

(dmft, DMFT)

Multivariate analysis linear regression

DCP = 76.4% (6 y)

DCP = 45.5% (12 y)

dmft = 3.3 (6 y)

DMFT = 1.1 (12 y)

Household income

 + 

Bener et al. [55] (CS)

Qatar

Permanent

1284

6–15 y

(M, F)

Clinic

WHO

(DMFT)

Multivariate analysis

DCP = 73%

DMFT = 4.5

House Hold Income

Hashim et al. [86] (CS)

UAE

Primary

1036

3–6 y

(M, F)

School

WHO

Logistic regression

Severe ECCP = 31.1%

Family demographic

Sibling order

Variedj

Abu Hamila [21] (CS)

Egypt

Primary

560

1–3.5 y

(M, F)

Clinic

WHO

(dmft)

Chi-Square

ECCP = 69.6%

dmft = 2.1–7.6

Number of Siblings

 + 

Shaghaghian et al. [37] (CS)

Iran

Primary

396

3–6 y

(M, F)

School

WHO

(dmft)

Multivariate analysis

DCP = 69.9%

dmft = 3.88

Large family size

 + 

Al-Meedani [58] (CS)

Iraq

Primary

684

0–6 y

(M, F)

Clinic

WHO

(dmft, dmfs)

Chi-Square,

Z-test

DCP = 69%

dmft = 3.4

dmfs = 6.9

Large family size

 + 

Amin & Al-Abed [62] (CS)

KSA

Permanent

1115

10–14 y

(M)

School

WHO

Stepwise

logistic regression

DCP = 68.9%

Nationality (Emirati)

 + 

Elamin et al. [89] (CS)

UAE

Primary

186

1.5–4 y

(M, F)

School

WHO

(dmft)

T-tests

Pearson’s

DCP = 41%

dmft = 1.7 (SD 2.81)

Geographical Location

Variedk

Al Mutawa et al. [48] (CS)

Kuwait

Primary

1277

4 &5 y

(M, F)

School

WHO

T-test

Chi Square

dft/dfs = 3.7/6.9 (4 y)

dft/dfs = 4.8/9.6 (5 y)

Geographical Location

Variedl

Ballouk & Dashash 2019 [70] (CS)

Syria

Primary

Permanent

1500

8–12 y

(M, F)

School

WHO

(DMFT, dmft)

ANOVA

Chi-Square

DCP = 79.1%

dmft = 2.47 (SD 2.94)

DMFT = 2.03 (SD 1.81)

Rural living

 + 

Al-Mendalawi & Karam [40] (CC)

Iraq

Primary

684

 < 6 y

(M, F)

Clinic

WHO

(DMFT)f

Chi-Square

DMFT = 2.03

Rural living

 + 

Elamin et al. [89] (CS)

UAE

Primary

186

1.5–4 y

(M, F)

School

WHO

(dmft)

T-test,

-Pearson’s

DCP = 41%

Dmft = 1.7 (SD 2.81)

Urban living

 + 

Bayat-Movahed et al. [27] (CS)

Iran

Primary

Permanent

18,946

3,6,9,12 y

(M, F)

Community health centres

WHO

T-test

Z-test

dmft = 1.9 (3 y)

dmft = 5.0 (6 y)

dmft = 3.6 (9 y)

dmft = 0.6 (12 y)

DMFT = 0.2 (6 y)

DMFT = 0.9 (9 y)

DMFT = 1.9 (12 y)

Semi-urban living

 + 

Al- Darwish et al. [54] (CS)

Qatar

Permanent

2113

12–14 y

(M, F)

School

WHO

(DMFT)

Multinomial logistic regression,

Adjusted Odds Ratio

DCP = 85%

DMFT (12 y) = 4.62 (SD 3.2)

DMFT (13 y) = 4.79 (SD 3.5)

DMFT (14 y) = 5.51 (SD 3.7)

School type

Public Schools

 + 

Farsi & Elkhodary [65]  (CS)

KSA

Permanent

801

Mean age = 16.5 y

(Grade 11)

(M, F)

School

ASTDD (DT)

Mann- Whitney

DT boys = 3.9 (SD 3.5)

DT girls = 4.9 (SD 3.7)

Public Schools

 + 

Al-Malik et al. [57] (CS)

KSA

Primary

987

2–5 y

(M, F)

School

BASCD

(dmft, dmfs)

Stepwise multiple logistic regression

DCP = 73%

Rampant caries = 43%

dmft = 4.8

dmfs = 12.7

Private schools

Sgan-Cohen et al. [53] (CS)

Palestine

Permanent

286

12 y

(M, F)

School

WHO

(DMFT)

Multivariate analysis

DMFT = 1.98

Public schools

 + 

Cinar & Murtomaa [74] (CS)

Turkey

Permanent

611

10–12 y

(M, F)

School

WHO

(DMFS)

T-test

Chi-Square

Logistic regression

DMFS = 4.44 (public school)

DMFS = 2.64 (private school)

Public schools

 + 

Cinar & Murtromaa [75] (CS)

Turkeym

Permanent

611

10–12 y

(M, F)

School

WHO

(DMFT)

T-test

Logistic regression

DMFT = 2.93

  1. AAPD American Association Paediatric Dentistry, BASCD British Association for the Study of Community Dentistry, CS Cross-sectional, CC Case control, DCP Dental caries prevalence, deft decayed, extracted due to caries and filled primary teeth, dfs decayed, filled surfaces in primary teeth, dft decayed, filled primary teeth, dmfs decayed, missing and filled surfaces in primary teeth; DMFS decayed, missing and filled surfaces in permanent teeth, dmft decayed, missing, filled primary teeth, DMFT decayed, missing, filled permanent teeth, ECC Early childhood caries, ECCP Early childhood caries prevalence, F Female, ICADS The international caries Detection and Assessment System, L Longitudinal, KSA Kingdom of Saudi Arabia, m months M Male, WHO World Health Organisation, SiC Significant caries index, SD Standard deviation, y years
  2. aAssociation: Positive ( +), negative (−) refers to this factor being either a statistically significant risk factor for caries (positive, +) or to this factor being statistically significant protective against caries (negative, −). In some studies it could not be determined whether a factor was positively or negatively associated with caries and in these cases the relation is described as unclear
  3. bThe CAST index scoring system is as follows: “0: sound”, “1: sealant”, “2: restoration”, “3: enamel lesions”, “4, 5: dentine lesions”, “6: pulp involvement”, “7: abscess/fistula”, “8: tooth loss”. If a situation did not match any codes from 0 to 8, a code 9 was assigned. The codes 0–2, 3, 4–5, 6–7, and 8 were considered as “healthy”, “pre-morbidity”, “morbidity”, “serious morbidity”, and “mortality”, respectively
  4. cThe authors describe their scoring as WHO (DMFT) whereas it should be noted that the age group is 3–6 year olds where normally WHO (dmft) is being used
  5. dData was collected during 9 years. In each year data was collected in a new sample
  6. eThe mean FT score was significantly higher for children having mothers with higher education, fathers with higher education and for residents of higher socio-economic areas, as compared to their counterparts in the opposite groups
  7. fThe authors describe their scoring as WHO(DMFT) whereas it should be noted that the age group is 0–6 year olds where normally WHO (dmft) is being used
  8. gThe SES level was based on the level of parental education and its type, guardians’ occupation and address
  9. hSES score based on parental education and suburban location of residence
  10. iSES score based on school type: low SES: deprived areas and refugee camps, medium SES: state schools, high SES: private schools
  11. jThe sibling order impacts dental caries status: 84.44%, 74,37%, 40.19% and 77.65% of only, eldest, middle and youngest child/ren had dental caries, respectively
  12. kDental caries prevalence differed between the 6 different regions/governorates in Kuwait but the characteristics of the regions are not described
  13. lDental caries prevalence differed between different parts/regions in Damascus but the characteristics of the regions are not described
  14. mA comparative study with Finland