Table 2. 2SLS Estimates of the (Cobb-Douglas) Body-Mass Production Function, by Survey Population.
Dependent variable: log weight/height | ||
---|---|---|
| ||
Input/Survey population | 1981-2b | 2001-2 |
Log individual total calorie consumptiona | .136 (3.37) | .241 (3.76) |
Very active occupationa | −.0119 (0.23) | −.0445 (3.20) |
Exceptionally active occupationa | −.0817 (1.26) | −.125 (5.65) |
Pregnanta | .326 (1.34) | .0273 (1.33) |
Lactatinga | .513 (4.65) | .0339 (1.39) |
Log age | .0987 (1.90) | .00804 (9.02) |
Log age squared | .0174 (2.37) | −.000092 (8.86) |
Male | −.0578 (1.81) | −.00947 (2.89) |
Male*log age | .0687 (4.04) | .00116 (3.72) |
Water drawn from tube well | −.0406 (2.10) | .00551 (0.88) |
Water drawn from well | −.0693 (3.15) | .00118 (0.18) |
Water drawn from pond | −.0649 (2.55) | .0216 (2.36) |
N | 1,737 | 5,750 |
Hg: calories, age, age squared, male, exceptionally active, very active, male*age = across populations; χ2(7) (p) | 9.06 (.17) |
Sources: NSRB 1981-2 and 2001-2.
Endogenous variable: instruments include household head's age and schooling level, land holdings, and price of all foods consumed interacted with individual age and sex variables, land and head's schooling and age.
Reproduced from Pitt et al. (1990). Asymptotic t-ratios in parentheses.