Table 3.

Risk factors, risk groups, and PPI use ratios.

	n	%
Risk group
Low	13	14
Moderate	53	55
High	30	31
Risk factors
History of ulcerative bleeding	20	21
History of peptic ulcer	24	25
Age >65	67	70
High dose of NSAID use	22	23
Medication use together with NSAIDs	15	16
PPI use ratio according to risk level
Low risk	4	31
Moderate to high risk	16	19

NSAID: non-steroidal anti-inflammatory drug; PPI: proton-pump inhibitor.