Variable | Category | Estimate | 95% confidence interval | P value | P value in type 3 effect analysis§ | |
---|---|---|---|---|---|---|
BMI† at baseline survey | 0.150 | 0.139 | 0.161 | <.01* | <.01* | |
Age | -0.263 | -0.269 | -0.258 | <.01* | <.01* | |
Overweight at age 5 ½ years (base category; < 85th percentile) | 1.736 | 1.703 | 1.770 | <.01* | <.01* | |
Gender (base category; boy) | Girl | -0.167 | -0.189 | -0.145 | <.01* | <.01* |
Gestational period | < 22–36 weeks | 0.170 | 0.115 | 0.225 | <.01* | <.01* |
(Base category; 37–41 weeks) | ≥ 42 weeks | -0.159 | -0.278 | -0.039 | <.01* | <.01* |
Main parental care provider at age 6 months | Father | -0.088 | -0.383 | 0.208 | .56 | |
(Base category; mother) | Grandmother | 0.004 | -0.061 | 0.069 | .91 | |
Grandfather | -0.012 | -0.349 | 0.326 | .95 | ||
Others | 0.123 | 0.061 | 0.184 | <.01* | ||
Main parental care provider across the surveys | Father | -0.094 | -0.249 | 0.061 | .24 | <.01* |
(Base category; mother) | Grandmother | -0.065 | -0.112 | -0.017 | .01* | |
Grandfather | 0.115 | -0.052 | 0.283 | .18 | ||
Others | 0.084 | 0.067 | 0.100 | <.01* | ||
Sibling at age 6 months (base category; no sibling) | With sibling | 0.018 | -0.008 | 0.043 | .17 | .17 |
Sibling across the surveys (base category; no sibling) | With sibling | -0.011 | -0.032 | 0.011 | .34 | .34 |
Household member at age 6 months | With both parents | -0.026 | -0.061 | 0.009 | .15 | .21 |
(base category; with grandparent(s) and parent(s)) | With a parent | 0.069 | -0.107 | 0.244 | .45 | |
Other | -0.673 | -1.285 | -0.061 | .03* | ||
Household member across the surveys | With both parents | -0.027 | -0.058 | 0.004 | .09 | .33 |
(Base category; with grandparent(s) and parent(s)) | With a parent | -0.040 | -0.103 | 0.024 | .22 | |
Other | -0.079 | -0.334 | 0.175 | .54 | ||
Parents’ income at age 6 months‡ | 4,610,000 yen-(42,000 dollars-) | -0.001 | -0.033 | 0.030 | .94 | .79 |
(Base category; < 4,610,000 yen (about 42,000 dollars)) | 5,870,000 yen-(53,000 dollars -) | 0.009 | -0.027 | 0.046 | .61 | |
6,970,000 yen-(63,000 dollars -) | 0.020 | -0.019 | 0.058 | .31 | ||
8,650,000 yen-(79,000 dollars -) | 0.000 | -0.047 | 0.046 | .99 | ||
Parents’ income at age 4 ½ years‡ | 4,660,000 yen-(42,000 dollars -) | 0.022 | -0.009 | 0.054 | .16 | .16 |
(Base category; < 4,660,000 yen (about 42,000 dollars)) | 5,770,000 yen-(52,000 dollars -) | 0.033 | -0.003 | 0.069 | .07 | |
6,810,000 yen-(62,000 dollars -) | 0.007 | -0.031 | 0.046 | .71 | ||
8,380,000 yen-(76,000 dollars -) | 0.045 | 0.000 | 0.090 | .05 | ||
Expense for kid at age 6 months | 0.000 | -0.001 | 0.002 | .61 | .61 | |
Expense for kid across the surveys | 0.000 | -0.001 | 0.001 | .56 | .56 | |
Wake-up time (base time; 0 am) | -0.040 | -0.061 | -0.019 | <.01* | <.01* | |
Sleeping hours | 0.004 | -0.013 | 0.020 | .66 | .66 | |
Television watching | < 1 hour | -0.040 | -0.142 | 0.061 | .44 | .13 |
1 hour - | -0.045 | -0.145 | 0.056 | .38 | ||
2 hour - | -0.050 | -0.151 | 0.051 | .34 | ||
3 hour - | 0.004 | -0.101 | 0.110 | .94 | ||
4 hour - | 0.000 | -0.118 | 0.119 | 1.00 | ||
5 hour - | 0.033 | -0.136 | 0.202 | .70 | ||
Video game playing | < 1 hour | 0.013 | -0.012 | 0.038 | .31 | .04* |
1 hour - | 0.067 | 0.025 | 0.109 | <.01* | ||
2 hour - | 0.024 | -0.098 | 0.145 | .70 | ||
3 hour - | -0.062 | -0.328 | 0.205 | .65 | ||
Breakfast at age 4 ½ years | Eating irregularly | -0.115 | -0.246 | 0.015 | .08 | .22 |
(Base category; eating regularly) | Don’t eat | 0.013 | -0.143 | 0.169 | .87 | |
Lunch at age 4 ½ years | Eating irregularly | 0.094 | -0.115 | 0.303 | .38 | .63 |
(Base category; eating regularly) | Don’t eat | -0.177 | -1.077 | 0.723 | .70 | |
Dinner at age 4 ½ years | Eating irregularly | 0.008 | -0.081 | 0.097 | .86 | .96 |
(Base category; eating regularly) | Don’t eat | -0.046 | -0.462 | 0.369 | .83 | |
Snack at age 4 ½ years | Eating irregularly | -0.053 | -0.092 | -0.013 | <.01* | .03* |
(Base category; eating regularly) | Don’t eat | -0.026 | -0.138 | 0.086 | .65 |