Study population: | |
---|---|
Were the groups clearly defined? |
8 studies unclear/no 29 studies yes |
Can selection bias sufficiently be excluded? 1 |
11 studies unclear/no 26 studies yes |
Did the immigrant groups and the majority population originate from the same source population? 2 |
2 studies unclear/no 35 studies yes |
Measurement: | |
Was the data collection adjusted for possible language problems or cultural differences3 |
24 studies unclear/no 13 studies yes |
Was use of primary medical care determined independently of immigrant status?4 |
28 studies unclear/no 9 studies yes |
Was immigrant status determined independently of primary medical care use?4 |
14 studies unclear/no 23 studies yes |
Analysis: | |
Were the results adjusted for potential confounders? |
11 studies unclear/no 26 studies yes |