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Table 1 Demographic overview and exposure to potentially inappropriate prescribing for all individuals enrolled in LiLACS NZ at each time point

From: Does potentially inappropriate prescribing predict an increased risk of admission to hospital and mortality? A longitudinal study of the ‘oldest old’

 

Baseline

(n = 671)

12-months

(n = 510)

24-months

(n = 403)

Māori

(n = 267)

Non-Māori

(n = 404)

P value

Māori

(n = 178)

Non-Māori

(n = 332)

P value

Māori

(n = 122)

Non-Māori

(n = 281)

P value

Age

(years, mean ± SD)

82.27 ± 2.64

84.56 ± 0.53

< 0.01*

83.16 ± 2.60

85.52 ± 0.51

< 0.01*

84.22 ± 2.58

86.54 ± 0.51

< 0.01*

Female

n (%)

160 (59.9)

214 (53.0)

0.50†

107 (60.1)

177 (53.3)

0.14†

78 (63.9)

146 (52.0)

0.03†

Number of all medicines prescribed

(mean ± SD)

4.63 ± 3.24

4.92 ± 3.18

0.25*

5.38 ± 3.57

5.29 ± 3.33

0.78*

5.69 ± 3.53

5.56 ± 3.34

0.68*

Socioeconomic deprivation (NZDep)

n (%)

0–4

5–7

8–10

37 (13.9)

65 (24.3)

165 (61.8)

101 (25.0)

171 (42.3)

132 (32.7)

< 0.01‡

27 (15.2)

46 (25.8)

105 (59.0)

83 (25.0)

143 (43.1)

106 (31.3)

< 0.01‡

16 (13.1)

35 (28.7)

71 (58.2)

71 (25.3)

124 (44.1)

86 (30.6)

< 0.01‡

Individuals with ≥1 PIM

n (%)

65 (24.3)

113 (28.0)

0.17†

62 (34.8)

125 (37.7)

0.53†

43 (35.3)

110 (39.2)

0.46†

Individuals with ≥1 PPO

n (%)

155 (58.1)

198 (49.0)

0.01†

119 (66.9)

194 (58.4)

0.06†

80 (65.6)

172 (61.2)

0.41†

Individuals with ≥1 PIM and/or PPO

n (%)

175 (65.5)

251 (62.1)

0.20†

134 (75.3)

234 (70.5)

0.25†

88 (72.1)

206 (73.3)

0.81†

  1. Key: NZDep, New Zealand Deprivation Index score (higher NZDep score is more deprived); *Two-samples t-test (significance p < 0.05); †Chi-squared (χ2) test (significance p < 0.05); ‡Mann Whitney U test (significance p < 0.05); P values measure differences between Māori and non-Māori