Study (first author’s name and year of publication) | Country of study | Study setting | Study population (sample size and age/sex distribution) | Study design |
---|---|---|---|---|
Rüth et al. [21] | Switzerland | Zurich University hospital | 45 subjects/controls Median ages at diagnosis: 9.8 years (3.4–19.8 years) for subjects and 5.9 years (0.1–16.3 years) for controls | Cross-sectional, case–control study |
Selewski et al. [22] | United States | Multi-center setting (Midwest Pediatric Nephrology Consortium) | 127 subjects (67 with prevalent NS and 60 with incident NS) Age range: 8–12 years (67 subjects) and 13–17 years (60 subjects) Male/Female (83 subjects/44 subjects) | Longitudinal cohort study |
Rahman et al. [15] | Bangladesh | Dhaka Medical College Hospital | 50 subjects Age range: 2–12 years (mean age: 7 ± 2.92 years) Male/Female (29 subjects/21 subjects) | Prospective cross-sectional study |
Agrawal et al. [17] | India | Tertiary health facility in southern India | 50 subjects and 50 controls Age range: 2–18 years Male/Female (30 subjects or controls/20 subjects or controls) | Cross-sectional, case–control study |
Khanjari et al. 23] | Iran | Ali Asghar & Pediatric Medical Centers Mofid hospital, Tehran | 38 subjects and 38 controls Age range: 8–12 years (mean age: 9.63 ± 1.49 years for subjects, 9.42 ± 1.51 years for controls) Male/Female (25/13 subjects and 26/12 controls) | A prospective, case–control study |
Roussel et al. [16] | France | Pediatric Nephrology centers in France | 110 subjects Age range:7–17 years (mean age: 11.6 years) | Cross-sectional observational study |
Troost et al. [24] | United States Canada | Multi-center tertiary health-facility settings in the United States and Canada | 56 subjects with incident INS* & 65 subjects with prevalent INS‡ (PROMIS-II) 87 subjects with incident INS & 172 prevalent INS (NEPTUNE) Age ranges: 8–17 years (children)  > 18 years (adults) | Longitudinal cohort study (PROMIS-II and NEPTUNE) |
Solarin et al. [25] | Nigeria | Tertiary health facility in Lagos | 61 subjects Age range: 2–18 years (mean age: 5 ± 3.39 years) Male/Female (37 subjects/24 subjects) | A prospective, cross-sectional study |
Jabbar et al. [26] | Iraq | Pediatric clinics at two hospitals in Baghdad | 50 subjects/50 controls Age range:2–12 years | Prospective case–control study |
Eid et al. [10] | Egypt | Mansoura University Children’s hospital | 300 subjects (100 subjects with INS & 200 matched controls: healthy & chronic non-renal illness groups) | Prospective case–control study |