Table IV.
Falsification Tests: Hookworm Eradication on Adult Occupational Outcomes.
| Samples: |
||||||||
|---|---|---|---|---|---|---|---|---|
| Females: |
Males: |
|||||||
| Dependent variables: |
All Ages | Ages [25,35) | Ages [35,50) | Ages [50,55] | All Ages | Ages [25,35) | Ages [35,50) | Ages [50,55] |
| Labor-force participation | −0.0056 (0.0284) [0.3238] | 0.0207 (0.0349) [0.3277] | −0.0264 (0.0331) [0.3237] | −0.0382 (0.0501) [0.3091] | −0.0069 (0.0065) [0.9790] | 0.0051 (0.0084) [0.9766] | −0.0048 (0.0094) [0.9824] | −0.0492 ** (0.0234) [0.9760] |
| Occupational income score | 0.0581 (0.4163) [3.3444] | 0.2195 (0.5295) [3.4879] | −0.1159 (0.5058) [3.3236] | −0.0626 (0.7358) [2.8716] | −0.0186 (0.4912) [18.5736] | 0.9070 (0.5863) [18.2216] | −0.6510 (0.6794) [19.1484] | −0.1192 (1.0823) [17.8854] |
| Duncan socioecon. index | −0.3499 (0.6185) [4.3239] | −0.2522 (0.8407) [4.5981] | −0.3388 (0.7316) [4.2919] | −1.0809 (1.0012) [3.3925] | −0.4529 (0.7931) [19.8944] | 1.1373 (0.8798) [18.9747] | −1.5683 (1.1703) [21.0538] | −0.7018 (1.8652) [19.1638] |
| Lives on a farm | −0.0379 (0.0362) [0.5601] | −0.0166 (0.0469) [0.5409] | −0.0625 (0.0431) [0.5715] | 0.0148 (0.0807) [0.5923] | −0.0249 (0.0397) [0.5662] | −0.0756 (0.0478) [0.5357] | 0.0250 (0.0547) [0.5708] | −0.0344 (0.0694) [0.6473] |
| Works in agriculture | −0.0360 (0.0342) [0.1844] | −0.0206 (0.0417) [0.1830] | −0.0460 (0.0401) [0.1866] | −0.0318 (0.0590) [0.1820] | −0.0416 (0.0382) [0.6043] | −0.0769 (0.0489) [0.5783] | −0.0002 (0.0492) [0.6027] | −0.1030 (0.0665) [0.6909] |
| Works as craftsman or operative | −0.0022 (0.0092) [0.0217] | −0.0013 (0.0147) [0.0243] | −0.0037 (0.0117) [0.0216] | −0.0055 (0.0164) [0.0126] | 0.0033 (0.0265) [0.1335] | 0.0508 (0.0377) [0.1404] | −0.0425 (0.0339) [0.1389] | −0.0138 (0.0424) [0.0950] |
| Born in a different state | 0.0029 (0.0237) [0.1620] | −0.0321 (0.0298) [0.1440] | 0.0308 (0.0352) [0.1648] | 0.0312 (0.0672) [0.2204] | 0.0268 (0.0267) [0.1924] | 0.0228 (0.0302) [0.1679] | 0.0266 (0.0374) [0.2071] | 0.0629 (0.0574) [0.2236] |
Notes: Each cell reports the results from a separate regression of the indicated variable on pre-treatment hookworm × post. The dependent variables are indicated in each Panel heading, and are derived from reported occupational and birthplace information. Robust standard errors in parenthesis (clustering on SEA). Mean of dependent variable in square brackets. Single asterisk denotes statistical significance at the 90% level of confidence, double 95%, triple 99%. Sample consists of all whites and blacks in the IPUMS for the indicated ages in the RSC-surveyed geographic units in 1910-20. All specifications include dummies for SEA and for age × black × Census region × year.