Table 4.
Multiple regression analysis of factors influencing on the number of teeth
| Variable | Crude | Adjusted | ||
|---|---|---|---|---|
| Beta Coefficients (Standard error) | p-value | Beta Coefficients (Standard error) | p-value | |
| Bone mineral density (ref. = normal) | ||||
| Osteopenia | −3.23(0.38) | <0.01 | −0.70(0.42) | 0.10 |
| Osteoporosis | −8.88(0.45) | <0.01 | −1.54(0.60) | <0.05 |
| Menarche age (years) | −0.88(0.14) | <0.01 | −0.02(0.13) | 0.90 |
| Duration of menopause (years) | −0.45(0.02) | <0.01 | −0.16(0.05) | <0.01 |
| Number of pregnancies | −0.84(0.09) | <0.01 | 0.14(0.12) | 0.21 |
| Age at first child’s birth (years) | 0.69(0.06) | <0.01 | 0.19(0.07) | <0.01 |
| Duration of taking oral contraceptives (months) | 0.000(0.000) | 0.67 | 0.02(0.02) | 0.15 |
| Duration of taking female hormone drugs (years) | −0.000(0.000) | 0.20 | 0.03(0.007) | <0.01 |
| Calcium intake | 0.003(0.001) | <0.01 | 0.001(0.000) | <0.01 |
| Age (years) | −0.57(0.02) | <0.01 | −0.31(0.06) | <0.01 |
| Subjective monthly income (ref. = low) | ||||
| Middle-low | 0.91(0.50) | 0.07 | 1.29(0.64) | 0.05 |
| Middle-high | 0.77(0.56) | 0.17 | 0.87(0.66) | 0.18 |
| High | 2.25(0.51) | <0.01 | 2.12(0.63) | <0.01 |
| Education level (ref. = less than elementary school) | ||||
| Less than middle school | 6.29(0.44) | <0.01 | 1.58(0.57) | <0.01 |
| Less than high school | 6.82(0.46) | <0.01 | 1.42(0.68) | <0.05 |
| Graduate of college or higher | 8.31(0.45) | <0.01 | 2.54(0.75) | <0.01 |
| Adjusted R2 = 0.34 | ||||