# Table 2 Cost of hospital stay in the studied elderly patient sample

Cost of hospital stay
Appropriate Inappropriate
Mean (95% CI) Mean (95% CI) p
Sex
Female 1,555.6 (319.4 – 5,413.1) 2,528.0 (665.7 – 5,817.9) p < 0.001
Male 1,432.5 (328.4 – 4,459.5) 2,132.0 (470.6 – 6,012.7) p < 0.001
Age (years)
60–64 1,409.4 (317.2 – 3,762.7) 2,183.2 (1,031.0 – 4,789.2) p = 0.018
65–69 1,261.6 (314.3 – 3,105.3) 3,374.0 (481.0 – 16,991.7) p = 0.001
70–74 1,397.5 (336.6 – 4,234.4) 1,703.3 (475.8 – 3,582.2) p = 0.239
75–79 1,504.2 (327.5 – 5,658.4) 2,393.7 (598.0 – 7,413.3) p = 0.010
80–84 1,679.5 (299.8 – 5,665.7) 2,395.0 (835.4 – 5,451.9) p = 0.116
≥ 85 1,696.3 (394.6 – 4,618.6) 2,283.6 (1,002.3 – 3,887.6) p = 0.062
Surgery 1,191.8 (334.3 – 5,059.3) 1,611.3 (362.1 – 3,596.7) p = 0.197
Internal medicine 1,536.0 (317.8 – 4,871.3) 2,456.2 (655.0 – 6,594.5) p < 0.001
Yes 1,497.2 (323.2 – 4,931.4) 2,278.0 (763.6 – 5,942.1) p < 0.001
No NA   2,515.3 (363.7 – 14,772.5) NA
Length of stay (days)
1–2 683.0 (202.4 – 1,623.6) 365.8 (355.9 – 375.6) p = 0.179
3–4 1,016.3 (512.2 – 1,978.7) 1,239.5 (476.1 – 2,855.7) p = 0.020
5–6 1,548.3 (835.4 – 2,466.1) 1,403.0 (939.8. – 2,169.4) p = 0.210
7–8 2,019.1 (1,195.4 – 2,991.3) 1,867.8 (1,181.6. – 3,145.1) p = 0.350
9–10 2,351.6 (1,546.6 – 3,197.5) 2,398.4 (1,554.1 – 3,171.2) p = 0.813
≥ 11 4,141.7 (2,055.5 – 7,246.8) 4,490.7 (1,935.5 – 14,042.9) p = 0.562
Number of comorbidities conditions
0 1,486.8 (320.6 – 4,883.8) 2,266.0 (585.1 – 6,778.6) p = 0.038
1 1,369.7 (334.3 – 3,002.8) 2,425.8 (1,052.4 – 3,605.6) p < 0.001
2 1,413.8 (332.2 – 4,115.5) 1,943.6 (684.3 – 4,110.3) p = 0.010
3 1,659.6 (346.3 – 6,202.7) 2,900.7 (576.6 – 12,091.9) p = 0.005
≥ 4 1,477.1 (282.4 – 4,272.3) 2,051.4 (600.7–5,048.5) p = 0.106
1. NA = Not Apply