Characteristic	Study author contacted	Study author replied	Study author asked for additional information	Study author provided data
	Date	Date	Short summary	Short summary
Baria 2014	Yes 07/01/2020 & 14/01/2020	No	Study start and finish dates and asked if outcome assessors for all outcome measures blinded	No response received
DIRECT 2013	Yes 07/0/2020 & 20/01/2020	Yes 20/01/20	Requested subgroup baseline and post intervention mean and SD for those only with stage 3 CKD eGFR 30 to 60 mL/min/1.73 m²	Baseline and post intervention mean and SD values for body weight, BMI, waist circumference, SBP and DBP, total cholesterol, LDL cholesterol, HDL cholesterol, triglycerides, and fasting plasma glucose levels for all 3 dietary intervention groups were provided
Jesudason 2013	Yes 14/01/2020	Yes 15/01/20	Requested post intervention mean and SD body weight baseline daily energy intake, post intervention albuminuria, baseline and post intervention SBP, post intervention HbA1C, and baseline and post intervention body fat mass and lean mass for both dietary groups	Requested data provided
Kittiskulnam 2014	Yes 14/01/2020	No	Enquired as to whether baseline and post intervention energy intakes were calculated from participants seven day food records and if so asked if this data could be sent	No response received
LANDMARK 3 2013	Yes 16/01/20	Yes	Requested sub‐study data for those in study who were overweight or obese	Author responded was unable to provide sub‐study data
Leehey 2009	Yes 14/01/2020 & 28/01/2020	No	Post intervention (12 weeks and 52 weeks) body weight (kg) mean and SD for all groups	No response received
MacLaughlin 2014	Yes 07/01/2020	Yes 21/01/20	Requested post intervention body weight, BMI, waist circumference, serum creatinine, proteinuria, SBP, DBP, and C‐reactive protein	Requested data provided
Orazio 2011	Yes 16/01/20	Yes	Requested sub‐study data for those in study who were overweight or obese	Author responded was unable to provide sub‐study data
Tzvetanov 2014	Yes 27/12/2019 & 19/01/2020	No	Asked author if they had published any further data with more numbers as report included was an abstract only	No response received
Teplan 2006 Teplan 2002	Yes 29/12/2019 20/01/2020	No	Whether multiple reports were from the same study. Asked to describe randomisation and allocation processes that were used to allocated participants to groups	No response received
Woolf 2017	Yes 22/02/20	No	Requested more detailed information on inclusion, exclusion criteria, information on study procedures, whether more data is published elsewhere and whether study is part of a large trial	No response received