Table 5.
Second stage IV results: KS3 on child adiposity (fat mass).
| OLS | 2SLS | |||
|---|---|---|---|---|
| (1) KS3 |
(2) KS3 |
(3) KS3 |
(4) KS3 |
|
| A. maternal BMI as IV | ||||
| Fat mass, age 11 | −0.042*** | −0.298*** | −0.119*** | −0.119*** |
| (0.014) | (0.051) | (0.046) | (0.046) | |
| p-Value, Hansen J test | 0.381 | 0.449 | 0.351 | |
| p-Value, Hausman test | 0.000 | 0.115 | 0.074 | |
| B. child's lagged fat mass as IV | ||||
| Fat mass, age 11 | −0.042*** | −0.100*** | −0.035** | −0.031* |
| (0.014) | (0.019) | (0.018) | (0.017) | |
| p-Value, Hansen J test | 0.912 | 0.864 | 0.944 | |
| p-Value, Hausman test | 0.377 | 0.165 | 0.318 | |
| C. Genetic markers as IV | ||||
| Fat mass, age 11 | −0.042*** | 0.106 | −0.098 | −0.039 |
| (0.014) | (0.155) | (0.120) | (0.122) | |
| p-Value, Hansen J test | 0.528 | 0.418 | 0.644 | |
| p-Value, Hausman test | 0.146 | 0.694 | 0.982 | |
| Contextual variables | Yes | – | Yes | Yes |
| Mother's health and behaviour | Yes | – | – | Yes |
| School fixed effects | – | – | – | – |
Notes: Robust standard errors in parentheses. Number of observations is 3001.
p < 0.10.
p < 0.05.
p < 0.01.