This table summarizes the findings from the article, "Exclusive breast feeding is the strongest predictor of infant survival in Northwest Ethiopia: a

longitudinal study".

Questions: (2)

What descriptive or inferential statistic are reported here? (I know the measures of frequency (% in this case) are part of descriptive statistics. Yet, the confidence interval is an inferential statistic. They used a random sample for this study. )

Where the descriptive or inferential statistics appropriate to the level of measurement for each variable? Why or why not? (For most variables, the level of measurement was nominal, there was two variables that were at the nominal level, and two that were at the interval level. But I don't know how they are appropriate to the level of measurement for each variable).

Table 1 Multivariate Poisson regression final model in predicting infant mortality in northwest, Ethiopia, Nov.2009 to August 2011 Descriptions Frequency (9%) ORR 95% AIRR 95% confidence interval confidence Interval Deaths Survived Residential area Urban 11 (079) 1,387 (99 21) Rural 1 19 (1.79) 6,701 (98 26) 223 (1.186 4.19) 233 ( 1.12 488) Matemal marital status Living In marriage 109 (1.41) 7,600 (98 59) Single (never married, widowed & separated) 21 (413) 488 (9587) 433 2.47 7.60) 748 ( 4.26 13.17)" Matemal education Illiterate 112 (187) 5,865 (98.13) 1.98 (0.89 437) 648 (2.71 15.52)" Read & write primary 12 (1.05) 1,129 (98.95) 121 (0/48 308) 1.38 (0 51 370) Secondary and above 6 (0.55) 1,094 (99.45) Wealth Index Lowest quin tile 56 (201) 2,684 (97.96) 1.70 (1.10 265) 100 (0.59 152) Medium quintile 41 (1.50) 2,699 (98 50) 126 (0.79 202) 084 (051 137) Highest quintile 33 (1.21) 2,705 (98.79) Roof Comugated Iron sheet 49 (1 35) 3,570 (98.65) Thatch or grass 81 (1.76) 4,518 (98 24) 1 65 (1.14 240) 212 ( 1.42 316)* Window Yes 78 (1 34) 5,734 (98.66) No 52 (216) 2,354 (97 84) 1 59 (1 10 228) 1.13 (0.78 1.63) Hand washing with soap at critical points Yes 11 (073) 1,486 (99.27) No 119 (177) 6,602 (98 23) 1.97 (098 399) 461 (2.M4 948)" Birth Interval 24 months 75 (1.27) 5,831 (98.73) Ever use of contraceptive methods Yes 25 (120) 2058 (98.80) No 105 (171) 6,080 (98 29) 1.15 (.70) 187) 1.65 (1 02 266) A child given semi-sold as complementary food at six months Yes 32 (052) 6,126 (99.48) No 98 (476) 1,962 (95 24) 516 (.98 895) 1459 (939 2267). Exclusive Breast feeding Yes 29 (048) 5,976 (99 52) No 101 (456) 2,112 (95.44) 1037 (677 1590) 786 ( 5.11 12.10]" Time of Initiation of breast milk Immediately 1- 24 hours 23 (0.58) 3,954 (99.42) 44 (1.78) 2,431 (98 22) 298 (1.78 500) 296 (1.76 496 More than 24 hours 63 (357) 1,703 (96.43) 610 (8.69 10.06) 484 (.91 7.99* *= Showing significant variables