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Table 2 Item analysis of “the community health workers perceptual and behavioral competency scale for preventing non-communicable diseases”

From: Development of a community health workers perceptual and behavioral competency scale for preventing non-communicable diseases (COCS-N) in Japan

n = 3120
No. Item Item difficultya Population distributionb Kurtosis / Skewnessc Correlation of itemd Good-Poor analysise Item-Total correlationf
0 1 2 3
1 The activities of a community health worker bring interest to my life and make it feel worthwhile. 1.0 1.4 16.8 55.6 26.1 −0.093 − 0.343 .000** .657**
2 What I do as a community health worker makes me aware of the importance of my own health. 0.6 0.3 3.3 40.4 56.0 0.105 −0.808 .000** .562**
3 I feel that my family and neighbors support my activities as a community health worker. 0.8 4.9 31.7 46.0 17.4 −0.499 −0.135 .000** .589**
4 I find that I enjoy what I do as a community health worker because I can learn new things about health. 1.0 0.4 7.9 47.6 44.1 −0.18 −0.575 .000** .622**
5 I feel motivated to convey information and advice on healthy lifestyles to my family and neighbors. 0.6 0.6 9.3 54.2 35.8 −0.026 −0.432 .000** .692**
6 I’m happy to see that other people are pleased with my activities as a community health worker. 0.7 0.9 12.5 44.7 41.8 −0.272 − 0.606 .000** .669**
7 I enjoy the time I spend with the local people, helping them enhance their health. 0.7 1.3 16.7 48.4 33.6 −0.407 − 0.428 .000** .717**
8 I want to work with the local people to maintain and improve everyone’s health as much as possible. 0.5 0.6 8.1 46.9 44.4 −0.05 − 0.628 .000** .693**
9 I trust the professionals (public health nurses, nutritionists, etc.) who are supporting the activities of community health workers. 0.5 0.1 4.0 34.5 61.4 0.231 −1.006 .000** .472**
10 I like and respect the colleagues I work with, such as the community health workers whose team I’m on. 0.7 0.4 6.3 40.3 53.0 0.179 −0.850 .000** .560**
11 I can try out beneficial lifestyle habits myself that I have found out about through my activities as a community health worker. 1.0 0.3 9.4 56.4 33.9 −0.269 −0.29 .000** .643**
12 I can collect well-grounded scientific information on health. 0.9 1.0 16.9 56.2 25.9 −0.222 −0.27 .000** .575**
13 I can incorporate seasonal food ingredients into daily meals and share the enjoyment of eating them with my family and neighbors. 0.9 1.6 17.7 52.4 28.2 −0.25 −0.366 .000** .554**
14 I can recommend physical exercises and sports to my family and neighbors, and invite them to take part in them. 0.6 3.9 26.3 44.5 25.3 −0.601 −0.270 .000** .699**
15 I can convey to my family and neighbors the importance of eating well-balanced meals. 0.8 3.1 24.2 52.0 20.7 −0.269 −0.278 .000** .658**
16 I can teach physical exercises and sports to my family and neighbors that they can easily incorporate into their daily lives. 0.9 6.3 32.6 43.7 17.4 −0.562 −0.128 .000** .681**
17 I can talk about health to local people at sites of community gatherings. 0.9 7.4 32.2 43.2 17.3 −0.578 −0.152 .000** .687**
18 I can communicate to professionals (doctors, public health nurses, etc.) the health concerns that the local people have. 0.9 8.2 37.1 39.2 15.5 −0.635 −0.014 + .000** .610**
19 I can share, with professionals (public health nurses, nutritionists, etc.), information about the health challenges that the community faces. 1.0 6.2 32.2 45.6 16.0 −0.475 −0.152 + .000** .625**
20 I can cooperate with area organizations and engage in programs to promote people’s health. 0.7 2.9 19.0 53.0 25.1 −0.077 −0.421 .000** .679**
  1. Exclusion criteria for the item analysis
  2. aThe proportion of items with no answers was over 5% of the sample
  3. bItems with a score (0 to 3) of 55% or higher in the sample
  4. cAbsolute value of skewness or kurtosis was less than −1 or greater than 1
  5. dCorrelation was over 0.6
  6. eDifference in the average score between the highest scoring group and the lowest scoring group was not significant (P ≥ 0.05)
  7. fThe correlation coefficient between the item and the total of all the items (not including the item itself) was 0.5 or lower
  8. **P < 0.001