Table 4. OCT analysis.

	All, n = 40	Quartile 1, n = 10	Quartile 2, n = 10	Quartile 3, n = 10	Quartile 4, n = 10	p
Type of plaque
- LP/ FP/CP (n)	17/12/11	9/1/0	6/3/1	0/6/4	2/2/6	<0.0001 †‡§
Lipid content
- Present (n)	27	10	6	5	6	0,081
- Averaged lipid arc (°, Mean±SD)	97±45	130±36	115±38	59±18	55±14	<0.0001 †‡§¶
- Lipid index (°mm, Mean±SD)	514±522	729±753	360±392	248±279	114±167	0.017
Calcification
- Present (n)	16	2	2	4	8	0,019 ‡¶
- Averaged calcification arc (°, Mean±SD)	53±15	53±13	44±14	62±21	51±12	0.566
- Calcification index (°mm, Mean±SD)	55±15	54±13	47±14	64±22	53±13	0.599
Total plaque extent
- Averaged arc of total plaque (°, Mean±SD)	174±52	156±53	146±43	193±32	197±62	0.054
- Total plaque index, (°mm, Mean±SD)	2314±1894	1989±1458	1599±1142	2222±1238	3387±2797	0.155
- Maximal area (mm2, Mean±SD)	3.79±1.53	3.45±2.01	2.68±0.88	4.11±0.96	4.87±1.35	0.006 ¶
- Maximal thickness (mm2, Mean±SD)	0.79±0.21	0.68±0,17	0.64±0.13	0.87±0.18	0.94±0.19	0.001 †‡§¶

Significant differences according to quartiles:

^† = Q1 vs. Q3,

^‡ = Q1 vs. Q4,

^§ = Q2 vs. Q3,

^¶ = Q2 vs. Q4.

Quartile 1 = <58 years;

Quartile 2 = 58–65 years;

Quartile 3 = 66–73 years;

Quartile 4 = >73 years.

Abbreviations:

CP = calcified plaque;

FP = fibrous plaque;

LP = lipid plaque;

p = p-value.