Table 3.
Multinomial logistic regression model of the association between BMI and health literacy
| Characteristics | Relative Risk Ratio | 95 % CI | Robust Std. Err. | z | P > |z| |
|---|---|---|---|---|---|
| Underweight Group (Ref: Normal Group) | |||||
| Sex (Ref: Girl) | |||||
| Boy | 0.87 | (0.84–0.90) | 0.02 | −7.77 | <0.001 |
| Ethnicity (Ref: Hakka, Taiwanese, and Chinese) | |||||
| Indigenous | 0.73 | (0.66–0.81) | 0.04 | −6.06 | <0.001 |
| Immigrants | 1.12 | (1.00–1.26) | 0.07 | 1.90 | 0.06 |
| Others/Unknown/Uncertain | 1.07 | (1.03–1.11) | 0.02 | 3.81 | <0.001 |
| Health literacy (quartile) (Ref: Lowest 20 %) | |||||
| 25th to 50th percentile (22–26) | 0.88 | (0.85–0.92) | 0.02 | −5.53 | <0.001 |
| 50th to 75th percentile (27-29) | 0.83 | (0.79–0.87) | 0.02 | −7.98 | <0.001 |
| Highest 25 % (30–32) | 0.83 | (0.79–0.87) | 0.02 | −6.96 | <0.001 |
| Self-rated health status (Ref: Bad or very bad) | |||||
| Normal | 0.53 | (0.49–0.58) | 0.02 | −16.23 | <0.001 |
| Good | 0.43 | (0.39–0.46) | 0.02 | −21.41 | <0.001 |
| Very Good | 0.46 | (0.43–0.50) | 0.02 | −19.11 | <0.001 |
| Health behaviors (Ref: Regular physical activity and no SSB intake) | |||||
| Had only one of the healthy behaviors (either regular physical activity or no SSB intake) | 1.05 | (1.01–1.09) | 0.02 | 2.75 | 0.01 |
| Had no regular physical activity and consumed SSB | 0.99 | (0.93–1.05) | 0.03 | −0.33 | 0.74 |
| Overweight Group (Ref: Normal Group) | |||||
| Sex (Ref: Girl) | |||||
| Boy | 1.49 | (1.45–1.53) | 0.02 | 30.73 | <0.001 |
| Ethnicity (Ref: Hakka, Taiwanese, and Chinese) | |||||
| Indigenous | 1.24 | (1.17–1.32) | 0.04 | 6.88 | <0.001 |
| Immigrants | 1.03 | (0.94–1.12) | 0.05 | 0.65 | 0.51 |
| Others/Unknown/Uncertain | 0.98 | (0.95–1.00) | 0.01 | −1.69 | 0.09 |
| Health literacy (quartile) (Ref: Lowest 25 %) | |||||
| 25th to 50th percentile (22–26) | 1.01 | (0.98–1.04) | 0.02 | 0.50 | 0.62 |
| 50th to 75th percentile (27–29) | 1.03 | (0.99–1.06) | 0.02 | 1.59 | 0.11 |
| Highest 25 % (30–32) | 1.07 | (1.02–1.11) | 0.02 | 3.16 | <0.001 |
| Self-rated health status (Ref: Bad or very bad) | |||||
| Normal | 0.55 | (0.52–0.58) | 0.02 | −19.66 | <0.001 |
| Good | 0.41 | (0.39–0.44) | 0.01 | −28.45 | <0.001 |
| Very Good | 0.43 | (0.41–0.46) | 0.01 | −26.63 | <0.001 |
| Health behaviors (Ref: Regular physical activity and no SSB intake) | |||||
| Had only one of the healthy behaviors (either regular physical activity or no SSB intake) | 1.12 | (1.09–1.15) | 0.01 | 8.41 | <0.001 |
| Had no regular physical activity and consumed SSB | 1.10 | (1.05–1.15) | 0.02 | 4.33 | <0.001 |
| Obese Group (Ref: Normal Group) | |||||
| Sex (Ref: Girl) | |||||
| Boy | 3.02 | (2.92–3.12) | 0.05 | 65.71 | <0.001 |
| Ethnicity (Ref: Hakka, Taiwanese, and Chinese) | |||||
| Indigenous | 1.32 | (1.22–1.42) | 0.05 | 7.06 | <0.001 |
| Immigrants | 1.03 | (0.93–1.15) | 0.06 | 0.64 | 0.52 |
| Others/Unknown/Uncertain | 0.89 | (0.87–0.92) | 0.01 | −6.65 | <0.001 |
| Health literacy (quartile) (Ref: Lowest 25 %) | |||||
| 25th to 50th percentile (22–26) | 1.03 | (0.99–1.07) | 0.02 | 1.31 | 0.19 |
| 50th to 75th percentile (27–29) | 1.01 | (0.97–1.06) | 0.02 | 0.67 | 0.50 |
| Highest 25 % (30–32) | 0.94 | (0.89–0.99) | 0.02 | −2.52 | 0.01 |
| Self-rated health status (Ref: Bad or very bad) | |||||
| Normal | 0.22 | (0.21–0.24) | 0.01 | −50.13 | <0.001 |
| Good | 0.11 | (0.10–0.12) | 0.00 | −68.85 | <0.001 |
| Very Good | 0.12 | (0.11–0.13) | 0.00 | −66.38 | <0.001 |
| Health behaviors (Ref: Regular physical activity and no SSB intake) | |||||
| Had only one of the healthy behaviors (either regular physical activity or no SSB intake) | 1.27 | (1.23–1.31) | 0.02 | 14.11 | <0.001 |
| Had no regular physical activity and consumed SSB | 1.31 | (1.24–1.38) | 0.03 | 10.20 | <0.001 |