Table 1.
Means, Standard Deviations, and Coding of Obesity and Other Variables: Adults Aged 45 and Older, National Health and Nutrition Examination Survey, 1971 to 1992
| Measures | Coding and Range | Mean | (S.D.)a |
|---|---|---|---|
| Upper-body disability, Wave 2 | Ranges from 9 (low) to 36 (high) | 10.11 | (3.18) |
| Upper-body disability, Wave 4 | Ranges from 9 (low) to 36 (high) | 10.41 | (3.95) |
| Lower-body disability, Wave 2 | Ranges from 10 (low) to 40 (high) | 11.92 | (4.56) |
| Lower-body disability, Wave 4 | Ranges from 10 (low) to 40 (high) | 12.23 | (5.78) |
| Early Obesity | |||
| Obese at age 25 | 1 = yes; 0 = no | .03 | — |
| Obese, Wave 1 | 1 = yes; 0 = no | .19 | — |
| Late Obesity | |||
| Obese, Wave 2 | 1 = yes; 0 = no | .14 | — |
| Obese, Wave 3 | 1 = yes; 0 = no | .11 | — |
| Obese, Wave 4 | 1 = yes; 0 = no | .10 | — |
| Lifetime Obesity | |||
| Chronic obesity, Wave 2 (times obese by Wave 2) | Count from 0 to 5 | .53 | (1.05) |
| Chronic obesity, Wave 4 (times obese by Wave 4) | Count from 0 to 7 | .74 | (1.46) |
| Ever-underweight by Wave 2 | 1 = yes; 0 = no | .15 | — |
| Ever-underweight by Wave 4 | 1 = yes; 0 = no | .17 | — |
| Change in Obesity | |||
| Became obese by Wave 2 | 1 = yes; 0 = no | .05 | — |
| Became nonobese by Wave 2 | 1 = yes; 0 = no | .09 | — |
| Obese, Wave 1 and Wave 2 | 1 = yes; 0 = no | .09 | — |
| Serious illness, Wave 1 | Count from 0 to 4 | .49 | (.71) |
| Chronic illness, Wave 1 | Count from 0 to 3 | .40 | (.55) |
| Change in serious illness from Wave 1 to Wave 2 | Count from 0 to 4 | .53 | (.69) |
| Change in chronic illness from Wave 1 to Wave 2 | Count from 0 to 3 | .28 | (.52) |
| Change in Regular Exercise | |||
| Ceased regular exercise by Wave 2 | 1 = yes; 0 = no | .32 | — |
| Began regular exercise by Wave 2 | 1 = yes; 0 = no | .03 | — |
| Continued regular exercise, Wave 1 to Wave 2 | 1 = yes; 0 = no | .59 | — |
| Age at Wave 1 | Ranges from 45 to 77 | 57.41 | (8.16) |
| Female | 1 = yes; 0 = no | .53 | — |
| Black | 1 = yes; 0 = no | .10 | — |
| Lives alone | 1 = yes; 0 = no | .14 | — |
| Education | 0 = no formal education; 7 = post-college | 3.47 | (1.54) |
| Yearly family income, Wave 1 b | l = < $l,000; 12 = > $25,000 | 7.46 | (2.75) |
| Yearly family income, Wave 2 b | 1 = < $3,000; 14 = > $100,000 | 7.43 | (2.78) |
| Regular physician | 1 = yes; 0 = no | .87 | — |
| Medicaid | 1 = yes; 0 = no | .03 | — |
| Private insurance | 1 = yes; 0 = no | .85 | — |
| Past smoker | 1 = yes; 0 = no | .29 | — |
| Current smoker | 1 = yes; 0 = no | .40 | — |
Note: Number of cases equals 4,107 at Wave 1. Women who gave birth one year before or after any survey wave were omitted from the analysis because of weight implications of pregnancy. Estimates are weighted to U.S. proportions.
a
Numbers in parentheses are standard deviations; standard deviations not shown for binary variables.
b
Income categories are mutually exclusive at each time of measurement but were modified between Wave 1 and Wave 2.