Table 4 Comparison of clinical characteristics between elderly patients with localized-OPLL and diffuse-OPLL (age ≥ 70 years).

From: Close association between non-alcoholic fatty liver disease and ossification of the posterior longitudinal ligament of the spine

Variable

Localized-OPLL (n = 10)

Diffuse-OPLL (n = 25)

Current age (years)

75 (73–88)

80 (70–86)

Age of OPLL symptom onset (years)

65 (50–80)

70 (20–80)

Age of onset < 50 years (%)

10.0

16.0

Male (%)

90.0

16.7

Current BMI (kg/m2)

26.3 (19.1–31.2)

25.4 (15.6–34.7)

Current BMI ≥ 25.0 kg/m2 (%)

75.0

60.0

Current BMI ≥ 27.5 kg/m2 (%)

37.5

24.0

Current BMI ≥ 30.0 kg/m2 (%)

25.0

12.0

Current BMI ≥ 35.0 kg/m2 (%)

0

0

Platelet (109 /L)

218 (159–309)

215 (126–362)

AST (U/L)

20 (19–33)

19 (12–48)

ALT (U/L)

26.4 ± 17.0

15.6 ± 10.7

AST/ALT

0.9 (0.4–1.6)

1.4 (0.8–3.6)

Comorbidity (%)

Myocardial infarction

10.0

0

Angina pectoris

0

8.0

Hypertension

50.0

68.0

Hyperlipidemia

50.0

48.0

Diabetes mellitus

20.0

36.0

Cancer

20.0

20.0

Renal disease

0

0

Gout

0

12.0

Drinking alcohol habits (%)

30.0

20.0

  1. Data are shown as mean ± standard deviation for normally distributed variables and median (minimum–maximum) for non-normally distributed variables, and as the percentage. The patients were divided into two groups according to OPLL type.
  2. OPLL, ossification of the posterior longitudinal ligament; BMI, body mass index.