Table 6.

Mean, range and standard deviation of CARIES-QC baseline scores

Participants/subgroups		CARIES-QC interval score
Participants	Number (%)	Mean score	Range	SD
Overall	197	9.34	0–24	4.44
Gender
Female	103	9.71	0–24	4.59
	(52.3%)
Male	94	9.05	0–18.75	4.28
	(47.7%)
Age group
5–7 years	114	9.82	0–24	4.51
	(57.9%)
8–11 years	66	8.91	0–18.75	4.55
	(33.5%)
12–16 years	17	8.90	2.63–16.17	3.49
	(8.6%)
Pain
Yes	142	10.49a**	0–24	4.09
	(72.1%)
No	55	6.57	0–17.76	4.10
	(27.9%)
Pulpal involvement
Yes	157	9.86b*	0–24	4.26
	(79.7%)
No	40	7.56	0–17.76	4.72
	(20.3%)
Anterior caries
Yes	41	10.72c*	0–24	4.71
	(20.8%)
No	156	9.04	0–19.96	4.32
	(79.2%)
Ethnicity
White British background	130	8.91	0–18.75	4.29
	(66.0%)
Other background	53	10.57d*	0–24	4.82
	(34.0%)
Deprivation
Deprivation group 1 (lowest)	67	9.20	0–24	4.92
	(34.0%)
Deprivation group 2 (middle)	65	9.93	0–19.96	4.35
	(33.0%)
Deprivation group 3 (highest)	65	9.04	0–17.76	4.02
	(33.0%)

SD Standard deviation, a**=children who reported pain had significantly higher mean CARIES-QC interval score than those who did not report pain (CI = 2.63–5.19; p < 0.01); b*=children who had pulpal involvement had significantly higher mean CARIES-QC interval score than those who had no pulpal involvement (CI = 0.79–3.82; p < 0.05); c*=children with anterior caries had significantly higher mean CARIES-QC interval score than those who did not have anterior caries (CI = 0.16–3.20; p < 0.05); d*=children from non-white British backgrounds had significantly higher mean CARIES-QC interval score than those from white British backgrounds (CI = −2.74 to − 0.13; p < 0.05)