Table 2 Characteristics of the follow-up cohort from 2015
|  | Total (N = 944) | High insulin level group (N = 510) | Low insulin level group (N = 434) | P value |
|---|---|---|---|---|
Age (year) | 71.00 (68.00,75.00) | 71.00 (68.00,76.00) | 71.00 (68.00,75.00) | 0.73 |
Gender |  |  |  | < 0.01 |
 Female | 485 (51.38%) | 288 (56.47%) | 197 (45.39%) |  |
 Male | 459 (48.62%) | 222 (43.53%) | 237 (54.61%) |  |
Hypertension | Â | Â | Â | 0.29 |
 No | 593 (62.82%) | 312 (61.18%) | 281 (64.75%) |  |
 Yes | 351 (37.18%) | 198 (38.82%) | 153 (35.25%) |  |
DM |  |  |  | < 0.01 |
 No | 853 (90.36%) | 443 (86.86%) | 410 (94.47%) |  |
 Yes | 91 (9.64%) | 67 (13.14%) | 24 (5.53%) |  |
Low muscle mass: | Â | Â | Â | 0.01 |
 No | 852 (90.25%) | 472 (92.55%) | 380 (87.56%) |  |
 Yes | 92 (9.75%) | 38 (7.45%) | 54 (12.44%) |  |
Glucose (mmol/L) | 5.35 (4.88,5.98) | 5.59 (5.07,6.53) | 5.15 (4.71,5.54) | < 0.01 |
Insulin (uIU/mL) | 11.37 (7.71,17.15) | 16.58 (13.35,23.04) | 7.34 (5.51,9.01) | < 0.01 |
HDL-C (mg/dL) | 52.20 (44.76,61.87) | 49.11 (42.92,59.16) | 55.10 (46.79,63.81) | < 0.01 |
LPA (mg/L) | 0.85 (0.50,1.76) | 0.76 (0.50,1.55) | 0.94 (0.55,1.92) | 0.01 |
CR (mg/dL) | 1.00 (0.88,1.13) | 1.00 (0.90,1.12) | 0.98 (0.87,1.13) | 0.37 |