Table 2.
Newcastle-Ottawa quality assessment scale for cohort studies
| Study reference (author, year) | Selection | Comparability | Outcome |
|---|---|---|---|
| Type 2 diabetes | |||
| Sasaki, 1989 (19) | **** | * | *** |
| Hanis, 1993 (16) | **** | * | *** |
| Miettinen, 1996 (7) | *** | * | *** |
| Forsblom, 1998 (20) | *** | * | *** |
| Klein, 1999 (4) | **** | * | ** |
| Kim, 2002 (21) | *** | * | *** |
| Ono, 2002 (22) | *** | * | *** |
| Rius Riu, 2003 (23) | **** | * | *** |
| Gimeno-Orna, 2006 (24) | *** | * | *** |
| Cheung, 2007 (25) | **** | * | *** |
| Cheung, 2007 (26) | **** | * | *** |
| Lövestam-Adrian, 2007 (27) | *** | * | ** |
| Juutilainen, 2007 (28) | **** | * | *** |
| Tong, 2007 (29) | *** | * | *** |
| Cheung, 2008 (30) | **** | * | *** |
| Liew, 2009 (31) | **** | * | *** |
| Gimeno-Orna, 2009 (32) | *** | * | *** |
| Type 1 diabetes | |||
| Klein, 1999 (4) | **** | * | ** |
| Weis, 2001 (33) | *** | * | *** |
| Torffvit, 2005 (34) | **** | * | *** |
| Soedamah-Muthu, 2008 (5) | **** | * | *** |