Table 2. Algorithm to estimate risk for incident type 2 diabetes mellitus using total points for the categorical model with logistic regression analysis in the 6-year follow-up cohort in Beijing and Shanghai, China, 2005-2011.
Items | Reference value (Wij) | βi | P value | βi(Wij-WiREF) | Pointij = βi(Wij-WiREF)/B a |
Sex | 0.2271 ( = B) | 0.027 | |||
Male | 0 (W1REF) | 0 | 0 | ||
Female | 1 | 0.2271 | 1 | ||
Body mass index (kg/m2) | 0.0533 | 0.001 | |||
<24 | 21.4 (W2REF ) | 0 | 0 | ||
24 to <28 | 25.8 | 0.2345 | 1 | ||
≥28 | 29.2 | 0.4157 | 2 | ||
Fasting plasma glucose (mmol/L) | 0.9624 | <0.001 | |||
<5.6 | 5.1 (W3REF ) | 0 | 0 | ||
5.6 to <6.1 | 5.8 | 0.6437 | 3 | ||
≥ 6.1 | 6.4 | 1.2511 | 6 | ||
HbA1c (%) | 1.3375 | <0.001 | |||
<5.5 | 5.3 (W4REF ) | 0 | 0 | ||
5.5 to <5.9 | 5.7 | 0.5350 | 2 | ||
≥5.9 | 6.1 | 1.0700 | 5 | ||
Hypertension (%) | 0.2420 | 0.019 | |||
No | 0 (W5REF ) | 0 | 0 | ||
Yes | 1 | 0.2420 | 1 | ||
C-reactive protein (mmol/L)b | 0.1104 | 0.019 | |||
<0.39 | -2.12c | 0 | 0 | ||
0.39 to 0.99 | -0.49 | 0.1800 | 1 | ||
≥1.00 | 0.65 | 0.3058 | 2 | ||
Maxim total point | 17 | ||||
Total point | 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | ||||
6-year risk of type 2 diabetes, % | 0.20 0.24 0.29 0.34 0.39 0.44 0.50 0.56 0.61 0.66 0.71 0.76 0.80 0.83 0.86 0.89 0.91 0.92 |
The points are rounded to the nearest integer.
C-reactive protein was tertiled in the current sample.
The reference figure was the median of natural log transformed values in each C-reactive protein category.