Assessment of oral self-care in patients with periodontitis: a pilot study in a dental school clinic in Japan

BMC Oral Health

Table 4 Summary of responses to "Dietary habits" and their relationship with plaque score

Dietary habits Items	Responses and Binarization†	Relationship with plaque score
1. Frequency of meals (per day) n = 65		NS
none	0 (0)
1x	0 (0)
2x	9 (14)
3x	56 (86)
4x or more	0 (0)
2. Self-evaluation of diet n = 61		NS
Good	30 (49)
Fair	23 (38)
Bad	8 (13)
3. Frequency of between-meal snacks (sweets) n = 55		NS
none	14 (25)
1x	27 (49)
2x	13 (24)
3x	1 (2)
4x or more	0 (0)

Values are expressed in n (%). Items subjected to the statistical analysis were shown.
†Responses were grouped into two (as separated by dotted line) and compared with two categories of PCR (≥ 40% vs. < 40%) by Fisher's exact test. P-values less than 0.05 were considered statistically significant.
NS; not significant

ISSN: 1472-6831