Table 1. Number and percent of persons with ACIP-recognized chronic underlying medical conditions, by category of body mass index (BMI).
| BMI Category | NHANES 2003–2006 (thousands)* | Hospitalized Patients | Deaths with pandemic H1N1† | |||||||||
| Individuals | (%) | Chronic Medical Condition** | (%)‡ | Individuals | (%) | Chronic Medical Condition** | (%)‡ | Individuals | (%) | Chronic Medical Condition** | (%)‡ | |
| 2–19 Years Old | ||||||||||||
| Underweight | 2,359 | (3.3) | 214 | (9.1) | 25 | (15.5) | 14 | (56.0) | - | - | - | - |
| Normal weight | 46,187 | (64.8) | 6,667 | (14.4) | 72 | (44.7) | 35 | (48.6) | 28 | (90.3) | 8 | (28.6) |
| Overweight | 11,022 | (15.5) | 1,972 | (17.9) | 23 | (14.3) | 15 | (65.2) | - | - | - | - |
| Obese | 11,660 | (16.4) | 2,419 | (20.7) | 41 | (25.5) | 22 | (53.7) | 3 | (9.7) | 1 | (33.3) |
| Total | 71,228 | (100) | 161 | (100) | 31 | (100) | 0 | |||||
| ≥20 Years Old | ||||||||||||
| Underweight | 3,501 | (1.8) | 1,248 | (35.7) | 5 | (2.5) | 3 | (60.0) | - | - | - | - |
| Normal weight | 61,798 | (31.4) | 18,318 | (29.6) | 42 | (21.0) | 24 | (57.1) | 100 | (49.5) | 75 | (75.0) |
| Overweight | 65,728 | (33.4) | 21,316 | (32.4) | 43 | (21.5) | 28 | (65.1) | - | - | - | - |
| Obese | 55,022 | (28.0) | 22,527 | (40.9) | 65 | (32.5) | 44 | (67.7) | 77 | (38.1) | 49 | (63.6) |
| Morbidly Obese | 10,635 | (5.4) | 5,450 | (51.2) | 45 | (22.5) | 35 | (77.8) | 25 | (12.4) | 14 | (56.0) |
| Total | 196,684 | (100) | 200 | (100) | 202 | (100) | ||||||
Note: Pregnant women and children <2 not included.
BMI (kg/m2) categories for 2–19 year olds based on age- and sex-specific CDC 2000 growth charts: underweight<5th percentile, normal weight 5–84th percentile, overweight 59–94th percentile, obese ≥95th percentile.
BMI (kg/m2) categories for ≥20 year olds: underweight<18.5, normal weight 18.5–24.9, overweight 25.0–29.9, obese 30.0–39.9, morbidly obese ≥40.
* National Health and Nutrition Examination Survey (NHANES) 2003–2006.
** For this analysis ACIP-recognized chronic medical conditions include cardiovascular disease, pulmonary disease, liver condition, cancer, and diabetes.
† Underweight, Normal, and overweight categories not separately defined for deaths.
‡ Row percent.