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Table 2 Methodological Quality Rating of the 12 included studies

From: Does total hip replacement affect sexual quality of life?

Study

Selection bias presenta

Information bias presenta

Statistical analysis bias presenta

Total bias Score

Level of Qualityb

Todd et al. 1973 [23]

1

1

1

3/3

L

Wiklund and Romanus 1991 [3]

0

1

1

2/3

L

Stern et al. 1991 [22]

1

1

1

3/3

L

Laupacis et al. 1993 [4]

0

1

1

2/3

L

Gogia et al. 1994 [21]

1

1

1

3/3

L

Gosens et al. 2005 [27]

0

1

1

2/3

L

Laffosse et al. 2008 [26]

1

1

1

3/3

L

Wall et al. 2011 [24]

0

1

1

2/3

L

Yoon et al. 2013 [13]

1

1

1

3/3

L

Wang et al. 2014 [14]

0

0

1

1/3

M

Nunley et al. 2015 [15]

0

1

0

1/3

M

Klit et al. 2015 [25]

0

1

1

3/3

L

  1. a1 = bias present or unclear; 0 = no bias present
  2. bH = high quality: no evidence for selection bias, information bias or statistical analysis bias (not available); M = Moderate Quality: one or two aspects rated as bias present or unclear; L = Low quality: all three aspects rated as bias present or unclear. THR = Total Hip Replacement