Skip to main content

Table 4 Quality assessment of studies (cohort, case-control, and cross-sectional) (Newcastle and Ottawa checklist)

From: Environmental and occupational factors and higher risk of couple infertility: a systematic review study

Quality

Study

Selection (max 4 stars)

Comparability (max 2 stars)

Outcome (max 3 stars)

NOS score

Good Quality

Jurewicz et al. [28]

***

**

**

7

Petersen et al. [29]

***

**

***

8

Vestergaard et al. [30]

****

**

***

9

Xia et al. [31]

***

**

***

8

Gennings et al. [32]

****

**

***

9

Du et al. [34]

****

**

***

9

Meeker et al. [35]

***

**

***

8

Velez et al. [36]

****

**

***

9

Yang et al. [92]

**

**

***

7

Guixiang et al. [39]

****

**

**

8

Harville et al. [40]

****

**

**

8

Bastos et al. [41]

***

**

**

7

Smith et al. [42]

****

**

***

9

Meeker et al. [43]

***

**

***

8

Meeker et al. [44]

***

**

***

8

Cohn et al. [45]

**

**

***

7

Crawford et al. [46]

****

**

***

9

Thurston et al. [47]

***

**

**

7

Guo et al. [48]

***

**

***

8

Jurewicz et al. [49]

**

**

***

7

Messerlian et al. [51]

****

**

***

9

Aneck-Hahn et al. [52]

***

**

***

8

Schuh-Huerta et al. [59]

****

**

***

9

Shin et al. [60]

**

**

***

7

Axelsson et al. [61]

***

**

***

8

Mahalingaiah et al. [63]

****

**

***

9

Cecilia Vecoli [64]

****

**

**

8

Mike Joffe et al. [65]

****

**

**

8

Sharma et al. [68]

***

**

**

7

Moghbeli-Nejad et al. [69]

****

**

**

8

Stone et al. [70]

****

**

***

9

ShaiShefi et al [72]

****

**

***

9

Moran-Martinez et al. [73]

****

**

**

8

Xu et al. [74]

***

**

**

7

Wu et al. [75]

***

**

***

8

He et al. [76]

**

**

***

7

Lei et al. [77]

**

**

***

7

Mendiola et al. [78]

***

**

***

8

Hsi et al. [79]

**

**

***

7

Meeker et al. [80]

***

**

***

8

lepecka-Klusek et al. [81]

***

**

**

7

Minguez-Alarcon et al. [82]

****

**

***

9

Gaskins et al. [83]

****

**

***

9

Wang et al. [84]

***

**

***

8

Wijesekara et al. [85]

**

**

***

7

de Fleurian et al. [86]

****

**

**

8

Daoud et al. [87]

**

**

***

7

Mahboubi et al. [88]

***

**

***

8

Kumar et al. (2013) [89]

***

**

***

8

Jeng et al. (2016) [90]

***

**

***

8

Medium quality

Kumar et al. [26]

**

**

**

6

Ji et al. [27]

**

**

**

6

Nishihama et al. [33]

**

**

**

6

Chen et al. [38]

***

*

**

6

Conti et al. [50]

**

**

**

6

Keshavarzi et al. [62]

**

**

**

6