Table. 2.
Agreement of analysis between the two laboratories showing intraclass correlation
| Fatty acids | PHFI laboratory (n = 180) | AIIMS laboratory (n = 180) | Mean difference (95% CI) | ICC (95% CI) | ||
|---|---|---|---|---|---|---|
| Mean ± SD | Median (IQR) | Mean ± SD | Median (IQR) | |||
|
ALA C18:3(n-3) |
0.4549 ± 0.4651 | 0.3632 (0.258, 0.552) | 0.5032 ± 0.5162 | 0.3774 (0.288, 0.589) | − 0.0260 (− 0.007, − 0.06) | 0.832 (0.775–0.875) |
|
EPA C20:5(n-3) |
0.3107 ± 0.1792 | 0.2741 (0.203, 0.363) | 0.3390 ± 0.1909 | 0.2981 (0.213, 0.424) | − 0.0284 (− 0.004, − 0.052) | 0.752 (0.667–0.816) |
|
DHA C22:6(n-3) |
0.9636 ± 1.0962 | 0.5027 (0.335, 1.014) | 1.0186 ± 1.0658 | 0.6095 (0.367, 1.101) | − 0.0549 (− 0.016, − 0.093) | 0.985 (0.980–0. 989) |
|
LA C18:2(n-6) |
5.8225 ± 2.3579 | 5.6083 (3.742, 7.501) | 5.9080 ± 2.4164 | 5.6816 (3.827, 7.594) | − 0.0855 (− 0.039, -0.131) | 0.996 (0.994–0.997) |
|
GLA C18:3(n-6) |
0.3509 ± 0.1862 | 0.3106 (0.225, 0.423) | 0.4192 ± 0.2421 | 0.3653 (0.265, 0.505) | − 0.0683 (− 0.037, − 0.099) | 0.689 (0.582–0.768) |
|
AA C20:4(n-6) |
4.6899 ± 3.7776 | 3.2405 (2.249, 5.406) | 4.7023 ± 3.8154 | 3.1651 (2.267, 5.418) | − 0.0124 (0.148, − 0.173) | 0.979 (0.971–0.984) |
PHFI, Public Health Foundation of India; AIIMS, All India Institute of Medical Sciences; ICC, intraclass correlation coefficient; CI, confidence interval; IQR, interquartile range; ALA, alpha linolenic acid; EPA, eicosapentaenoic acid; DHA, docosahexaenoic acid; LA, linoleic acid; GLA, gamma-linolenic acid; AA, arachidonic acid