Table 2.
Annual rates and costs of consultations, tests, and prescription items issued, by body mass index
| Rate per person-year | Annual costs per person | |||
|---|---|---|---|---|
| BMI category (kg/m2) | Number per year | Difference in rate (%)a | Annual costs (2016 UK £) | Difference in costs (%)a |
| Primary care consultations | ||||
| 18.5 to <20 | 7.0 (6.7, 7.3) | 0.4% (−4.2, 5.2) | £290 (276, 304) | 0.9% (−3.8, 5.8) |
| 20 to <22.5 (reference) | 7.0 (6.8, 7.1) | 0.0% (−2.0, 2.0) | £288 (280, 295) | 0.0% (−2.0, 2.1) |
| 22.5 to <25 | 7.1 (7.0, 7.3) | 2.7% (1.1, 4.2) | £296 (289, 302) | 2.7% (1.2, 4.3) |
| 25 to <27.5 | 7.5 (7.4, 7.7) | 8.4% (6.6, 10.1) | £314 (307, 321) | 9.1% (7.3, 10.9) |
| 27.5 to <30 | 8.1 (7.9, 8.3) | 16.7% (14.4, 19.0) | £338 (329, 347) | 17.5% (15.1, 19.8) |
| 30 to <35 | 9.0 (8.7, 9.2) | 28.8% (26.1, 31.6) | £376 (366, 386) | 30.7% (27.8, 33.5) |
| 35 to <40 | 10.1 (9.7, 10.5) | 45.0% (39.3, 50.9) | £428 (410, 447) | 48.9% (42.9, 55.3) |
| ≥40 | 11.1 (10.3, 11.9) | 59.2% (48.9, 70.3) | £473 (441, 506) | 64.5% (53.5, 76.3) |
| Diagnostic tests | ||||
| 18.5 to <20 | 8.3 (7.2, 9.4) | 3.3% (−9.5, 18.0) | £60 (52, 68) | 6.7% (−6.0, 21.1) |
| 20 to <22.5 (reference) | 8.0 (7.5, 8.5) | 0.0% (−5.8, 6.1) | £56 (52, 60) | 0.0% (−5.4, 5.8) |
| 22.5 to <25 | 8.1 (7.6, 8.5) | 0.9% (−3.2, 5.2) | £55 (52, 58) | −2.0% (−6.0, 2.1) |
| 25 to <27.5 | 8.6 (8.1, 9.1) | 7.3% (2.4, 12.4) | £56 (53, 60) | 0.4% (−4.2, 5.2) |
| 27.5 to <30 | 8.6 (8.0, 9.1) | 7.3% (1.3, 13.6) | £55 (51, 59) | −1.8% (−7.4, 4.1) |
| 30 to <35 | 8.6 (8.0, 9.2) | 7.0% (0.7, 13.8) | £55 (50, 59) | −2.6% (−8.6, 3.9) |
| 35 to <40 | 8.6 (7.6, 9.6) | 7.8% (−3.3, 20.2) | £55 (48, 62) | −2.4% (−13.1, 9.6) |
| ≥40 | 10.0 (7.9, 12.2) | 25.5% (1.3, 55.4) | £64 (50, 78) | 14.4% (−8.0, 42.1) |
| Prescription items issued | ||||
| 18.5 to <20 | 28.4 (26.2, 30.6) | 5.4% (−2.2, 13.5) | £256 (231, 280) | 12.9% (2.5, 24.3) |
| 20 to <22.5 (reference) | 27.0 (26.0, 27.9) | 0.0% (−3.0, 3.1) | £227 (216, 237) | 0.0% (−4.0, 4.2) |
| 22.5 to <25 | 29.3 (28.5, 30.1) | 8.7% (6.4, 11.1) | £233 (224, 241) | 2.6% (−0.6, 5.8) |
| 25 to <27.5 | 33.8 (32.8, 34.8) | 25.4% (22.5, 28.3) | £264 (253, 274) | 16.4% (12.7, 20.2) |
| 27.5 to <30 | 39.2 (37.9, 40.5) | 45.3% (41.4, 49.4) | £302 (285, 318) | 33.1% (26.8, 39.7) |
| 30 to <35 | 47.4 (45.9, 49.0) | 76.0% (71.1, 81.0) | £369 (353, 385) | 62.8% (56.7, 69.1) |
| 35 to <40 | 57.0 (53.9, 60.1) | 111.5% (100.4, 123.2) | £460 (429, 492) | 103.0% (90.1, 116.9) |
| ≥40 | 69.2 (63.6, 74.8) | 156.5% (136.5, 178.3) | £587 (525, 648) | 158.7% (134.1, 185.9) |
All models are adjusted for age, region of recruitment, deprivation, educational qualifications, parity, age at first birth, smoking, alcohol intake, financial year, and proportion of year with contributed data. Values are means (99% confidence intervals)
BMI body mass index
aDifferences are presented as percentage differences compared to BMI 20 to <22.5 kg/m2, with floating confidence intervals