Table 1.
Characteristics of the study population by treatment group at baseline.
| N | OHI PL | OHI PUFA | SRP PL | SRP PUFA | p-value | |
|---|---|---|---|---|---|---|
| Age, years mean (SD) | 22–69 | 46.48 (8.95) | 44.71 (12.23) | 41.07 (12.37) | 41.70 (8.03) | 0.30a |
| Gender | 0.54b | |||||
| Female | 30 | 11 (44.00%) | 9 (42.86%) | 5 (33.33%) | 5 (25.00%) | |
| Male | 51 | 14 (56.00%) | 12 (57.14%) | 10 (66.67%) | 15 (75.00%) | |
| Ethnicity | 0.87c | |||||
| Caucasian | 9 (36.00%) | 10 (47.62%) | 5 (33.33%) | 8 (40.00%) | ||
| African-American | 7 (28.00%) | 4 (19.05%) | 2 (13.33%) | 3 (15.00%) | ||
| Asian | 1 (4.00%) | 2 (9.52%) | 1 (6.67%) | 3 (15.00%) | ||
| Other | 8 (32.00%) | 5 (23.81%) | 7 (46.67%) | 5 (25.00%) | ||
| DP | 0.59b | |||||
| Non DP | 18 (72.00%) | 17 (80.95%) | 9 (60.00%) | 14 (70.00%) | ||
| DP | 7 (28.00%) | 4 (19.05%) | 6 (40.00%) | 6 (30.00%) | ||
| Baseline AL mean (SD) | 2.09 (1.40) | 1.59 (1.04) | 2.11 (1.43) | 1.59 (0.83) | 0.15a | |
| Baseline PD mean (SD) | 3.56 (0.63) | 3.27 (0.61) | 3.67 (0.80) | 3.42 (0.59) | 0.29a | |
| Baseline BOP mean (SD) | 1.35 (0.75) | 1.13 (0.47) | 1.65 (0.73) | 1.28 (0.63) | 0.33a | |
| Baseline PI mean (SD) | 0.73 (0.34)* | 0.71 (0.27) | 0.72 (0.33) | 0.65 (0.30) | 0.036a |
a
ANOVA (Log transformed outcome),
b
Chi-square,
c
Fisher’s exact.
AL: attachment loss; BOP: bleeding on probing; DP: disease progression; OHI: oral hygiene instructions only; PD: pocket depth; PI: plaque index; PL: placebo; PUFA: n-3 polyunsaturated fatty acids fish oil capsules; SRP: scaling and root planing; SD: standard deviation