Table 4 Grouping studies based on data type
From: Determinants of catastrophic health expenditures in Iran: a systematic review and meta-analysis
| Group by type of data | N | Event rate (% CHE) | Lower limit | Upper limit |
|---|---|---|---|---|
| Primary data | 22 | 0.116 | 0.104 | 0.130 |
| Secondary data | 30 | 0.030 | 0.023 | 0.040 |
| Overall | 52 | 0.093 | 0.083 | 0.103 |