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Table 1 Critical Appraisal of included studies

From: Prevalence of early childhood caries in South Africa: a systematic review

First author, year

Age

Was the sample frame appropriate to address the target population?

Were study participants recruited in an appropriate way?

Was the sample size adequate?

Were the study subjects and settings described in detail?

Was data analysis conducted with sufficient coverage of the identified sample?

Were valid methods used for the identification of the condition?

Was the condition measure din a standard, reliable way for all the participants?

Was there appropriate statistical analysis?

Was the response rate adequate, and if not, was the low response rate managed appropriately?

Total

Booyens (1991) [21]

5

Yes

Yes

Yes

No

Yes

Yes

Yes

No

Yes

7

Brindle (2000) [22]

5–6

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

Yes

8

Chosack (1988) [24]

3–5

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

6

Chosack (1990) [25]

3–5

Yes

Yes

No

No

Yes

Yes

Yes

No

Yes

6

Cleaton-Jones (1984) [26]

1–5

No

No

Yes

No

No

Yes

Yes

No

Yes

4

Cleaton-Jones (1978) [27]

1–5

No

No

Yes

No

No

Yes

No

No

Yes

3

Cleaton-Jones (1978) [28]

1–5

Yes

No

Yes

Yes

No

Yes

No

No

Yes

5

Cleaton-Jones (1981) [29]

1–5

No

Yes

Yes

Yes

No

Yes

Yes

No

Yes

6

Cleaton-Jones (1989) [30]

1–4

No

Yes

Yes

Yes

Yes

Yes

Yes

No

Yes

7

Cleaton-Jones (2000) [31]

2–5

Yes

Yes

Yes

Yes

No

Yes

Yes

Yes

Yes

8

Cleaton-Jones(2008) [32]

2–5

Yes

Yes

Yes

Yes

No

Yes

Yes

Yes

No

7

Du Plessis (2000) [33]

4–5

Yes

No

No

Yes

Yes

Yes

Yes

No

Yes

6

Gordon 1985) [34]

1–2

No

No

No

No

No

Yes

Yes

No

Yes

3

Gordon (2007) [35]

< 6

Yes

No

No

No

No

No

No

No

No

1

Granath 1991) [36]

4–5

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

9

Granath (1993) [37]

4

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

8

Khan (1998) [38]

3–5

No

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

8

McInnes (1979) [39]

3–5

Yes

No

No

No

Yes

Yes

No

No

Yes

4

Mndzebele (2014) [40]

2–6

Yes

Yes

No

Yes

No

Yes

Yes

Yes

Yes

7

Mohamed (2018) [41]

1–5

Yes

No

Yes

Yes

Yes

Yes

No

No

Yes

6

Mothupi (2016) [42]

4–6

Yes

Yes

Yes

Yes

No

Yes

Yes

Yes

Yes

8

Ntombela (2015) [43]

1–5

Yes

Yes

Yes

Yes

Yes

Yes

No

Yes

Yes

8

Richardson (1978) [44]

1–6

No

Yes

Yes

No

No

No

No

No

Yes

3

Roberts (1993) [45]

1–4

No

Yes

Yes

No

Yes

Yes

Yes

Yes

Yes

7

Thekiso (2012) [46]

4–5

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

Yes

8

Toi (1999) [47]

5

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

6

Van Wyk (2004a) [9]

4–6

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

Yes

8

Wanjau (2006) [48]

3–5

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

Yes

8

Williams (1985) [49]

2–5

No

No

Yes

Yes

No

Yes

Yes

No

Yes

5