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Table 2 Overview of clinicopathological factors that were assessed in the studies

From: Clinicopathological and prognostic value of calcification morphology descriptors in ductal carcinoma in situ of the breast: a systematic review and meta-analysis

Clinicopathological factors

First author, year of publication (reference)

No. of studies

No. included in meta-analysis

Assessed factors

Statistically significant finding

Grade

Avdan Aslan, 2021 [16]; Barreau, 2005 [19]; de Roos, 2006 [20]; Dinkel, 2000 [22]; Evans, 2010 [23]; Hofvind, 2011 [24]; Holmberg, 2013 [25]; Kessar, 2002 [26]; Kong, 2020 [28]; Lee, 2021 [30]; Rauch, 2016 [34]; Rominger, 2015 [35]; Szynglarewicz, 2016 [38]; Tan, 2000 [41]; Thurfjell, 2002 [43]; Zhou, 2017 [47]

16

8

11 studies in meta-analysis

Presence (micro) invasive breast cancer

Bagnall, 2001 [18]; Lee, 2000 [29]; Nishimura, 2004 [33]; Stomper, 2003 [37]; Tabar, 2011 [40]; Thurfjell, 2002 [43]; Wang, 2019 [44]; Zhang, 2021 [46]

8

1

5 studies in meta-analysis

(Comedo)necrosis

Avdan Aslan, 2021 [16]; Barreau, 2005 [19]; Holmberg, 2013 [25]; Lee, 2021 [30]; Rauch, 2016 [34]; Szynglarewicz, 2016 [38]; Tan, 2000 [41]

7

4

5 studies in meta-analysis

Her2 overexpression

Avdan Aslan, 2021 [16]; Bae, 2013 [17]; Kim, 2015 [27]; Lee, 2021 [30]; Rominger, 2015 [35]; Zhou, 2017 [47]

6

3

4 studies in meta-analysis

ER positivity

Avdan Aslan, 2021 [16]; Bae, 2013 [17]; Kim, 2015 [27]; Lee, 2021 [30]; Rominger, 2015 [35]; Zhou, 2017 [47]

6

3

4 studies in meta-analysis

Recurrencea

Holmberg, 2013 [25]; Rauch, 2016 [34]; Rominger, 2015 [35]; Zhou, 2017 [47]

4

1

Groups not comparable for meta-analysis

Age

Holmberg, 2013 [25]; Szynglarewicz, 2016 [38]; Zhou, 2017 [47]

3

0

Groups not comparable for meta-analysis

Ki67/proliferation

Lee, 2021 [30]; Zhou, 2017 [47]

2

0

Groups not comparable for meta-analysis

Histological size

Evans, 2010 [23]; Holmberg, 2013 [25]

2

1

Groups not comparable for meta-analysis

Neoductgenesis

Zhou, 2017 [47]; Zhou, 2014 [48]

2

1

Groups not comparable for meta-analysis

Calcification distribution

Hofvind, 2011 [24]; Szynglarewicz, 2016 [38]

2

1

Groups not comparable for meta-analysis

Margin status

de Roos, 2004 [21]

1

1

Meta-analysis N/A

Comedocarcinoma

Barreau, 2005 [19]

1

1

Meta-analysis N/A

Multicentricity

Rauch, 2016 [34]

1

0

Meta-analysis N/A

Tenascin-C

Zhou, 2017 [47]

1

1

Meta-analysis N/A

Oncotype DX score

Woodard, 2019 [45]

1

1

Meta-analysis N/A

Progression to invasive diseasea

Lilleborge, 2021 [31]

1

1

Meta-analysis N/A

  1. aPrognostic outcomes