Table 3: The relationship of intervention using SMS and PC interval.

No-SMS group ()SMS group ()Total () value

PC interval 3–5 h18 (13.3)57 (41.9)75 (27.7)<0.001
Satisfactory Ottawa scale (≤5)78 (57.8)108 (79.4)186 (68.6)<0.001

PC interval*, preparation-to-colonoscopy interval; SMS, short message service of cellular phone.