Table 4 Types of LDL-c Equations
Name of equation | Count | % | Formula | Studies |
|---|---|---|---|---|
Ahmadi’s equation | 5 | 5.3 | LDL = (TC/1.19) − (HDL/1.1) + (TG/1.9) − 38 | Choi (2021) |
Karkhaneh (2019) | ||||
Molavi (2020) | ||||
Rim (2016) | ||||
Atabi (2020) | ||||
Anandaraja’s equation | 9 | 9.6 | LDL = (0.9 × TC) − (0.9 × TG/5) − 28 | Atabi (2020) |
Choi (2021) | ||||
Dansethakul (2015) | ||||
Ephraim (2018) | ||||
Gasko (2006) | ||||
Karkhaneh (2019) | ||||
Molavi (2020) | ||||
Razi (2017) | ||||
Rim (2016) | ||||
Chen’s equations | 8 | 8.5 | LDL = (TC − HDL) × 0.9 − (TG × 0.1) | Atabi (2020) |
Choi (2021) | ||||
Dansethakul (2015) | ||||
Karkhaneh (2019) | ||||
Molavi (2020) | ||||
Razi (2017) | ||||
Rim (2016) | ||||
Choi’s equations | 1 | 1.1 | LDL = TC − 0.87 × HDL − 0.13 × TG | Choi (2021) |
Dansethakul’s equations | 2 | 2.1 | LDL = 0.9955TC − 0.9853HDL-C − 0.1998TG + 7.1449 | Dansethakul (2015) |
Sonsok (2020) | ||||
de Cordova’s equation | 6 | 6.4 | LDL = 0.7516 × (TC-HDL) | Atabi (2020) |
Choi (2021) | ||||
Dansethakul (2015) | ||||
Karkhaneh (2019) | ||||
Pradhan (2020) | ||||
Rim (2016) | ||||
DeLong’s equation | 3 | 3.2 | LDL = TC − (HDL + 0.16 × TG | Atabi (2020) |
Choi (2021) | ||||
Rim (2016) | ||||
Ephraim’s equation | 1 | 1.1 | LDL (mmol/L) = TC-HDL-TG/4 | Ephraim (2018) |
Friedewald’s equationa | 22 | 23.4 | LDL = TC-HDL-(TG/5) | All included studies |
Ghasemi’s equation | 1 | 1.1 | LDL = TC-HDL-TG/4 | Ghasemi (2018) |
Hatta’s equation | 1 | 1.1 | LDL = TC-HDL-TG/4 | Kang (2017) |
Hattori’s equation | 4 | 4.3 | LDL = (0.94 × TC) − (0.94 × HDL) − (0.19 × TG) | Atabi (2020) |
Choi (2021) | ||||
Karkhaneh (2019) | ||||
Rim (2016) | ||||
Martin’s equation | 12 | 12.8 | LDL-C = TC-HDL-C-TG/adjustable factor | Chaen (2016) |
Choi (2021) | ||||
Chung (2018) | ||||
Ephraim (2018) | ||||
Ferrinho (2021) | ||||
Kang (2017) | ||||
Martínez-Morello (2021) | ||||
Rim (2016) | ||||
Sampson (2020) | ||||
Singh (2020) | ||||
Song (2021) | ||||
Sonoda (2018) | ||||
Molavi’s equation | 1 | 1.1 | LDL = (0.97 × TC) − (0.93 × HDL) − (0.19 × TG) | Molavi (2020) |
Puavilai’s equation | 6 | 6.4 | LDL = TC-HDL-(TG/6) | Atabi (2020) |
Choi (2021) | ||||
Dansethakul (2015) | ||||
Kang (2017) | ||||
Karkhaneh (2019) | ||||
Sonsok (2020) | ||||
Rao’s equation | 3 | 3.2 | LDL = [(4.7 × TC) − (4.364 × HDL-C) − TG]/4.487 LDL = TC-HDL − {TG × [0.203 − (0.00011 × TG)} LDL = [(4.7 × TC) − (4.364 × HDL-C) − TG]/4.487 | Atabi (2020) |
Choi (2021) | ||||
Rim (2016) | ||||
Sampson’s equation | 3 | 3.2 | LDL-C = TC/0.948 − HDL-C/0.971 − (TG/8.56) + (TG × (Non-HDL-C/2140) − TG2/16100) − 9.44 | Martínez-Morello (2021) |
Sampson (2020) | ||||
Song (2021) | ||||
Teerakanchana’s equation | 2 | 2.1 | LDL-C = (0.91 × TC) − (0.634 × HDL-C) − (0.111 × TG) − 6.755 | Atabi (2020) |
Rim (2016) | ||||
Vujovic’s equation | 4 | 4.3 | LDL = TC-HDL-(TG/6.58) LDL = TC-HDL-(TG/6.58) LDL-Cal = TC-HDL-C-TG/3 LDL = TC-HDL-(TG/6.58) | Atabi (2020) |
Choi (2021) | ||||
Dansethakul (2015) | ||||
Karkhaneh (2019) | ||||
Total | 94 | 100 |