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Welcome to the dietaryindex wiki!

The package can calculate the following dietary pattern indexes using all dietary assessments if the serving sizes of foods/beverages are given (do Step 1 by yourself and Step 2 is done for you):

• Healthy Eating Index 2015 (HEI2015)
• Alternative Healthy Eating Index (AHEI)
• Dietary Approaches to Stop Hypertension Index (DASH)
• DASH Index in serving sizes from the DASH trial(DASHI)
• Mediterranean Diet Index (MED)
• MED Index in serving sizes from the PREDIMED trial (MEDI)
• Dietary Inflammation Index (DII)
• American Cancer Society 2020 diet score (ACS2020_V1 and ACS2020_V2)

Meanwhile, the dietaryindex package can calculate many dietary indexes within 1 step (Step 1 + Step 2) using the following dietary assessments:

• It can calculate HEI2015, AHEI, DASH, DASHI, MED, MEDI, and DII for the NHANES_FPED (after 2005).
• It can calculate HEI2015, AHEI, DASH, MED, and DII for the ASA24
• It can calculate HEI2015, AHEI, DASH, MED for the DHQ3
• It can calculate HEI2015, AHEI, DASH, MED, DII, AHEIP for the Block FFQ (DataDictionary_Muldoon_4M_microbiome_nutsDec2013)

Future potential works (open to collaboration):

• Create the Chinese Heart-Healthy Diet generic function (https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.122.059045)
• Create EAT-Lancet generic and NHANES functions (https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(18)31788-4/fulltext)

More ideas are welcome! The developer is open to creating dietary pattern indexes for diets specific to certain health conditions, such as gut microbiome diversity, oral microbiome diversity, etc.