Table 2 The study designs of Farsi nutrition articles published in Iran, 2001-2010
From: Nutrition research in the first decade of 21st century in Iran: the necessity of road Map
Study design | Total | 2001-2005 | 2006-2010 | Ρ among all groups | Ρ 1 For each group versus others |
|---|---|---|---|---|---|
n (%) | |||||
Total | 2086 (100) | 598 (28.7) | 1488 (71.3) | ||
Clinical trials and interventions | 455 (21.8) | 91 (15.2) | 364 (24.5) | <0.0001 | <0.0001 |
Survey | 433 (20.8) | 171 (28.6) | 262 (17.6) | <0.0001 | |
Case–control | 256 (12.3) | 111 (18.6) | 145 (9.7) | <0.0001 | |
In vivo | 243 (11.6) | 79 (13.2) | 164 (11) | 0.16 | |
In vitro | 88 (4.2) | 1 (0.2) | 87 (5.9) | <0.0001 | |
Cohort | 48 (2.3) | 10 (1.7) | 38 (2.5) | 0.23 | |
Case study | 12 (0.6) | 5 (0.8) | 7 (0.5) | 0.34 | |
Other descriptive | 551 (26.4) | 130 (21.7) | 421 (28.3) | 0.002 | |
Total | 2086 (100) | 598 (100) | 1488 (100) |