sol6934 - Chapter 1 1 95 33 12 2 24 6 25 31 100 336 6 98 1...

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Unformatted text preview: Chapter 1 1. % 95 . 33 12 . 2 24 . 6 % 25 . 31 % 100 336 . 6 98 . 1 98 . 1 4 73 . 15 1 5 ) 336 . 6 77 . 5 ( ) 336 . 6 95 . 5 ( ) 336 . 6 83 . 3 ( ) 336 . 6 29 . 9 ( ) 336 . 6 84 . 6 ( 336 . 6 5 68 . 31 5 77 . 5 95 . 5 83 . 3 29 . 9 84 . 6 2 2 2 2 2 = = = = = = =-- +- +- +- +- = = = + + + + = A A A NA NA NA cv s y cv s y Very similar levels 2. 8596 . 178 153 9607 . 178 171 2 ^ 1 ^ = = = = π π 3. risks similar very No, ) 1172 . 11035 1293 ) | ( ) 1153 . 11036 1273 ) | ( ) c B C P b B C P a = = = = 4. 74 . 139 , 75 . 23 , 18 . 94 ) 013974 . 264913 3702 ) | ( 002375 . 171363 407 ) | ( ) 009418 . ) ( ) c L C P L C P b C P a = = = = = 5. Sensitivity: 45/50 = 0.90 (90%) Specificity: 24/63 = 0.38 (38%) PV + : 45/84 = 0.54 (54%) PV- : 24/29 = 0.83 (83%) Accuracy: (45+24)/113 = 0.61 (61%) 6. Sensitivity: 116/140 = 0.83 (83%) Specificity: 211/215 = 0.98 (98%) PV + : 116/120 = 0.97 (97%) PV- : 211/235 = 0.90 (90%) Accuracy: (116+211)/355 = 0.92 (92%) 7. a) Cross-sectional b) Cohort study c) Randomized clinical trial d) Historical controls 8. a) Dependents: Ability to obtain erection (ordinal), EDITS (Numeric) Independent: Dose (Numeric) b) Approx. 41 c) Validity: It is accurately measuring patient satisfaction. Reliability: Reproducability of responses within subjects d) Yes Chapter 2 9. 2206 . 77 . 3 . 7 40 6 . 45 ) 6 . 45 ( : women for men for 99 . ) 6 . 45 ) 2 . 12 ( 33 . 2 74 ( 01 . ) 33 . 2 ( ) ) 296 , 142 ( 77 219 ) 2 . 39 ( 96 . 1 219 95 . ) 96 . 1 96 . 1 ( ) 05 . ) 5 . 99 ) 3 . 14 ( 645 . 1 123 ( 05 . ) 645 . 1 ( ) 10 . ) 8 . 162 ) 5 . 15 ( 28 . 1 143 ( 10 . ) 28 . 1 ( ) 1020 . 27 . 1 6 . 2 3 . 63 60 ) 60 ( ) 0721 . 46 . 1 8 . 2 9 . 67 72 ) 72 ( ) = =- ≥ = ≥ = =- ≥ ⇒ ≈- ≤ ≡ ± ≡ ± ⇒ = + ≤ ≤- = =- ≤ ⇒ =- ≤ ≈ = + ≥ ⇒ ≈ ≥ = - =- < = < = =- = Z P Y P Y P Z P g Y P f Y P Z P e Y P Z P d Z P Y P b Z P Y P a σ μ σ μ 10. = = = = = = = = = = = = 02 . 2 50 3 . 14 , 123 ) 00 . 1 9 . 3 , 9 . 69 ) 22 . 35 3 . 1 , 9 . 33 ) 56 . 25 8 . 2 , 9 . 67 ) Y Y Y Y Y Y Y Y N d N c N b N a σ μ σ μ σ μ σ μ 11. 1611 . 99 . 02 . 2 123 125 ) 125 ( ) 6802 . 1841 . 1357 . 1 ) 1 . 1 9 . ( 1 9 . 69 71 1 9 . 69 69 ) 71 69 ( ) 64 . 8 22 . 9 . 33 32 ) 32 ( ) 0010 . ) 09 . 3 ( 75 . 3 56 . 9 . 67 70 ) 70 ( ) = =- ≥ = ≥ =-- = ≤ ≤- = - ≤ ≤- = ≤ ≤ ≈ =- ≤ = ≤ = ≥ < =- ≥ = ≥ Z P Y P d Z P Z P Y P c Z P Y P b Z P Z P Y P a Chapter 3 12....
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This note was uploaded on 07/28/2011 for the course STA 6934 taught by Professor Young during the Fall '08 term at University of Florida.

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sol6934 - Chapter 1 1 95 33 12 2 24 6 25 31 100 336 6 98 1...

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