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Table 1 Patient Characteristics

From: Multidrug use positively correlates with high-risk prescriptions in the Japanese elderly: a longitudinal study

Characteristics

All categories

1–4 drugs

5–9 drugs

≥10 drugs

n = 11,241

n = 7723

n = 2802

n = 716

(% or range)

(% or range)

(% or range)

(% or range)

Sex

 Male

5653 (50.3)

3765 (48.8)

1430 (51.0)

393 (54.9)

 Female

5588 (49.7)

3958 (51.2)

1372 (49.0)

323 (45.1)

Median age (years)

73 (65–100)

73 (65–98)

73 (65–95)

73 (65–100)

Age group

 65–74 years

6444 (57.3)

4384 (56.8)

1646 (58.7)

414 (57.8)

  ≥ 75 years

4797 (42.7)

3339 (43.2)

1156 (41.3)

302 (42.2)

Median number of prescribed drugs

3 (1–25)

2 (1–4)

6 (5–9)

11 (10–25)

Median number of consultation departments

1 (1–6)

1 (1–3)

1 (1–5)

2 (1–6)

  1. †The Mann-Whitney U test was used after the Kruskal-Wallis test to compare the differences among groups. Correction by the Bonferroni method was performed, and p < .017 was considered statistically significant. In the comparison of medians between the 1–4-drugs and 5–9-drugs groups, the 1–4-drugs and 10 or more-drugs groups, and the 5–9-drugs and 10 or more-drugs groups, each p value was < .001