First author, year No. of participants (n) No. of males (%) Age Primary disease Mean length of disease (years) Current smoker Current smoker Current treatment Current treatment Prior TNFi (n)
Feagan, 2005 181 98 (54.1) Mean: 41.4 UC 6.6 8 151 on 5-ASA 151 on 5-ASA none none
Feagan, 2013 895 525 (58.7) Mean: 40.3+13.1 UC 6.9 + 6.4 55 (6.1) 332 (37.1) on CS only; 159 (17.8) on IS (AZA on 5-MP); 149 (16.6) on CS + IS 332 (37.1) on CS only; 159 (17.8) on IS (AZA on 5-MP); 149 (16.6) on CS + IS Prior TNFi: 431 (48.2) Prior TNFi: 431 (48.2)
Sands, 2014 416 180 (43.2) Median: 35.9 CD 8.2 u/a CS: 228; IS: 140; 5-ASA: 129 CS: 228; IS: 140; 5-ASA: 129 Prior TNFi: 115 Prior TNFi: 115
Sandborn, 2013 1115 520 (46.6) Mean: 36.1 + 12.1 CD 9.0±7.8 298 (26.7) CS: 381 (34.2); IS: 181 (16.2); CS+ IS: 189 (17.0) CS: 381 (34.2); IS: 181 (16.2); CS+ IS: 189 (17.0) Prior TNFi: 689/1115 (61.8) Prior TNFi: 689/1115 (61.8)
Motoya, 2019 292 180 (61.1) Mean: 42.8 UC 7.9 u/a 5-ASA: 259; CS: 55, IS: 105; IS + CS: 41 5-ASA: 259; CS: 55, IS: 105; IS + CS: 41 Prior TNFi: 150 Prior TNFi: 150