School-based strategies for oral health education of adolescents- a cluster randomized controlled trial

BMC Oral Health

Table 4 **Effect sizes (β)* of different OHE strategies (95% CI) at evaluation IV**

	Dentist-led	Teacher-led	Peer-led	Self-learning
OHK^a	1.90 (1.53-2.36)	1.90 (1.53-2.36)	1.99 (1.61-2.47)	1.12 (0.87-1.45)
KGO^b	2.77 (1.86-4.13)	2.12 (1.40-3.20)	2.79 (1.87-4.15)	1.08 (0.65-1.80)
OHB^c	2.18 (1.96-2.43)	2.14 (1.92-2.38)	2.37 (2.13-2.64)	1.24 (1.09-1.41)
OHS^d	1.58 (1.30-1.91)	1.47 (1.21-1.79)	1.51 (1.25-1.84)	1.22 (0.98-1.50)
PLQ^e‡	0.81 (0.69-0.96)	0.93 (0.80-1.09)	0.91 (0.78-1.06)	0.91 (0.78-1.06)
BOP^f‡	0.63 (0.50-0.80)	0.47 (0.35-0.63)	0.42 (0.30-0.58)	0.87 (0.71-1.06)
CAL^g‡	1.03 (0.81-1.31)	1.12 (0.89-1.41)	1.04 (0.82-1.32)	0.92 (0.71-1.19)
KBS^h	1.87 (1.64-2.13)	1.82 (1.59-2.08)	1.95 (1.71-2.22)	1.19 (1.02-1.38)

*The estimates are the exponentiated risk ratios (RR for control group: 1). All values adjusted for sex, type of school and clustering effect using Generalized Estimating Equations.
OHE: Oral health education; CI: Confidence Interval.
^aOral health knowledge (total score: 12).
^bKnowledge about gingivitis and oral cancer (total score: 5).
^cOral health behavior (total score: 12).
^dOral hygiene status (total score: 12, indicates the number of sextants of oral cavity free of plaque, bleeding on probing and calculus).
^ePlaque (total score: 12); ^fBleeding on probing (total score: 12).
^gCalculus (total score: 12).
^hOral health knowledge, oral health behavior and oral hygiene status (total score: 36).
^‡The lower the value the better it is.

ISSN: 1472-6831