Table 4 The association of independent variables (SES, oral health practices and salivary parameters) and caries experience in permanent teeth (DMFT) in the entire sample
Univariate regression | Multivariate regression | |||||
|---|---|---|---|---|---|---|
P value | Unadjusted regression coefficient (95% C.I.) | Partial eta squared | P value | Adjusted regression coefficient (95% C.I.) | Partial eta squared | |
CP versus normal | 0.017* | 1.21 (0.22, 2.20) | 0.04 | < 0.0001* | 3.79 (2.66, 4.92) | 0.23 |
Age | 0.27 | − 0.11 (− 0.31, 0.09) | 0.008 | |||
Male versus female | 0.93 | 0.02 (− 0.51, 0.55) | 0.001 | |||
Illiterate father versus university educated | 0.051 | 0.77 (− 0.04, 1.54) | 0.04 | |||
Father occupation: unemployed versus employed | 0.93 | 0.03 (− 0.66, 0.73) | 0.001 | |||
Illiterate mother versus university educated | 0.32 | 0.43 (− 0.43, 1,30) | 0.012 | |||
Mother occupation unemployed versus employed | 0.47 | 0.21 (− 0.67, 0.79) | 0.006 | |||
Visiting dentist | 0.08 | 0.48 (− 0.07, 1.03) | 0.13 | |||
Tooth-brushing | 0.024* | − 0.61 (− 1.13, − 0.08) | 0.06 | 0.002* | − 1.79 (− 2.29, − 1.29) | 0.12 |
Sugary snacks twice daily | 0.019* | 0.63 (0.11, 1.15) | 0.06 | 0.51 | 0.16 (− 0.33, 0.65) | 0.006 |
Eating semiliquid diet versus solid | 0.52 | 0.38 (− 0.79, 1.55) | 0.005 | |||
Eating liquid diet versus solid | 0.046* | 1.28 (0.02, 2.54) | 0.046 | < 0.0001* | 2.62 (1.29, 3.95) | 0.17 |
Unstimulated flow rate | < 0.0001* | − 7.04 (− 9.84, − 4.24) | 0.14 | < 0.0001* | − 5.08 (− 6.43, − 3.72) | 0.27 |
Initial pH | 0.15 | − 0.95 (− 2.26, 0.35) | 0.02 | 0.54 | − 0.33 (− 1.67, 1.00) | 0.003 |
Buffering capacity | 0.001* | − 0.99 (− 1.59, − 0.40) | 0.11 | 0.011* | − 1.69 (− 2.98, − 0.40) | 0.08 |
Salivary total antioxidant capacity | 0.028* | 0.28 (0.03, 0.52) | 0.06 | < 0.0001* | 0.96 (0.47, 1.44) | 0.17 |
S. mutans (log count) | < 0.0001* | 2.05 (1.05, 3.05) | 0.16 | < 0.0001* | 3.16 (2.68, 3.63) | 0.20 |
Saliva viscosity: watery versus thick | 0.001* | − 0.92 (− 1.44, − 0.41) | 0.13 | 0.59 | − 0.16 (− 0.74, 0.42) | .004 |