Table 6:
OLS, IV and Upper Bounds Estimates for the Effect of BMI on CES-D Score
| Mean (1) |
OLS (2) |
IV (3) |
IV(1) (4) |
UB of β under (A4) (5) |
UB of β under (A4 & A5) (6) |
|
|---|---|---|---|---|---|---|
|
| ||||||
| Panel A: Add health | ||||||
| All | 5.79 | 0.028*** (.010) | 0.020 (.038) | 0.032** (.016) | 0.020 [.052] | 0.020 [.066] |
| Women | 6.18 | 0.062*** (.014) | 0.019 (.054) | 0.075*** (.020) | 0.019 [.094] | 0.019 [.118] |
| Men | 5.33 | −0.028** (.014) | 0.020 (.053) | −0.045* (.023) | −0.028 [−.003] | −0.027 [.010] |
| Panel B: HRS | ||||||
| All | 1.26 | 0.029*** (.004) | 0.051*** (.015) | 0.022*** (.006) | 0.029 [.037] | 0.022 [.035] |
| Women | 1.43 | 0.030*** (.005) | 0.053*** (.019) | 0.023*** (.008) | 0.030 [.041] | .023 [.040] |
| Men | 1.03 | 0.026*** (.006) | 0.046*** (.023) | 0.019** (.010) | 0.026 [.041] | 0.018 [.042] |
Notes: Add Health regressions control for age, age squared, gender, birth order, mother’s education, picture vocabulary score, PGSs for depression and education, and the first 20 ancestry-specific principal components of the genetic data. HRS regressions control for age, age squared, gender, mother’s education, PGSs for depression and education, and the first 10 ancestry-specific principal components of the genetic data. Heteroscedasticity-robust standard errors in (.)
significant at 1%
significant at 5%
significant at 10%.
The Nevo & Rosen (2012) approach is implemented using the imperfectiv command in Stata. The upper endpoint of the 95% confidence interval on the bounded parameter is given in [.].