Correction to: Quality of life in bladder cancer patients receiving medical oncological treatment; a systematic review of the literature.

The original article contains a major error whereby a main Table is omitted. Thus, the following corrections to the original article should be considered.

Correction to: Health Qual Life Outcomes (2019);17:20

https://doi.org/10.1186/s12955-018-1077-6

The original article [1] contains a major error whereby a main Table is omitted. Thus, new Table 3 (shown ahead) should be considered as Table 3 in the original article. All citations in the text to tables are with these changes are correct.

Table 3

Outcome: Overall QoL

		GRADE issues					Overall GRADE rating
	Nb. of studies	Risk of bias	Inconsistency	Indirectness	Imprecision	Publication bias
Before diagnosis	1 [12]	X1		X2	X3
Before treatment	4 [14, 18-19, 27]		X4, X5
During treatment	2 [16, 18]		X4	X6	X3
≤ 6 months after treatment	4 [18-19, 27, 34]	X7	X5
> 6 months after treatment	7 [13, 20-21, 24-25, 27, 35]	X8	X9, X5			None apparent10

1 Two validated QoL questionnaires with very large difference between outcomes

2 Predominantly NMIBC patients, scores not specific for MIBC population

3 Small number of patients

4 Large difference in populations hence diverging scores

5 Use of different QoL scales

6 Only one study representing metastatic population, no studies representing neoadjuvant population

7 Mixed BC population, selected population [34]

8 Compliance 47-77%, thereby introducing selection bias

9 QoL questionnaires designed for prostate population

10 As estimated by funnel plot