From: Frequency patterns of core constipation symptoms among the Asian adults: a systematic review
Reference/ Country | Sample /Age | Settings | Study design | Sampling | Sample size (response rate) | Diagnostic criteria |
---|---|---|---|---|---|---|
Neri et al. (2016), Italy | Chronic constipation patient, mean age 50.1 (SD, 16.7) | 39 Italian referral centers for gastrointestinal disorders | Cross-sectional | Purposive | 2203 | Rome III |
Enck et al. (2016), German | Household adults, mean age 51.3 (SD, 0.6) | Telephone registry | Cross-sectional | RLD | 589 (56.8%) | Rome III |
Neri et al. (2014), Italy | Chronic constipation patient, mean age 50.3 (SD: 16.6) | 39 Italian referral centers for gastrointestinal disorders | Cross-sectional | Purposive | 856 | Rome III |
Ford et al. (2014), Canada | Referral patients, ≥16 years old | 2 GI outpatient clinics of two hospitals | Cross-sectional | Purposive | 3656 (86.6%) 343 FC 175 IBS-C | Rome III |
Bellini et al. (2013), Italy | Chronic constipation patient, ≥18 years old | Primary care settings in Province Pisa represented by 41 GPs. | Cross-sectional | Stratified cluster | 229 147 FC 50 IBS-C 32 SPC | Rome III |
Johanson & Kralstein (2007), USA | Adults, ≥18 years old | Membership in the Knowledge Networks Panel | Cross-sectional | Purposive | 557 | Rome II |
Pare et al. (2001), Canada | Household members, ≥18 years old | 5 regions | Cross-sectional | Stratified random | 1149 (57%) | Rome II |