EFFECT OF VITAMINS C AND E INTAKE ON BLOOD ... - EuroJournals

EFFECT OF VITAMINS C AND E INTAKE ON BLOOD ... - EuroJournals EFFECT OF VITAMINS C AND E INTAKE ON BLOOD ... - EuroJournals

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European Journal of Social Sciences - Volume 2, Number 1 (2006) and Obafemi Awolowo University (OAU). The two state universities are: Olabisi Onabanjo University (OOU) and Ladoke Akintola University of Technology (LAUTECH). The study population consisted of lecturers in the ten universities. They constituted the universe to be sampled. The four universities were selected using stratified and random sampling techniques. The ten universities were first stratified into federal and state universities before two each were randomly selected from each stratum. Selection of Respondents The method used to draw out sampled respondents was the stratified and random sampling techniques. The total number of lecturers in each University was divided into the existing seven strata: Professors (Prof), Associate Professors (Ass. P), Senior Lecturers (S.L.), Lecturer I (L1), Lecturer II (L11), Assistant Lecturers (A.L.), and Graduate Assistant (G.A.). A simple random sampling technique was used to select respondents from each stratum. To get a proportional sample fraction from each stratum in each university, at least ten percent of the lecturers in each stratum were randomly selected. In this way, each group in the population was represented. The combination of these sub-samples from all the strata in all the universities constitutes the sample size. The Sample Size Table 1: Distribution of respondents (Res.) by Universities Rank No in O.O.U O.O. U F.U.T.A. F.U.T.A. LAUTECH LAUTECH O.A.U. . OA.U Total Total Group No of Res. No in Group No of Res No in Group No of Res. No in 6 Group No of Res. No in Group Prof 45 5 32 3 22 9 187 39 286 56 Ass. P 26 4 8 1 5 1 78 16 117 22 S.L 70 8 62 6 24 10 196 40 352 64 Ll 110 11 54 6 48 20 215 45 427 82 Lll 106 11 61 7 57 23 112 24 336 65 A.L 128 13 70 8 82 27 145 30 425 78 G.A 68 9 37 4 136 44 84 18 325 75 Total 553 61 324 35 374 134 1017 212 2268 442 Source: Field Survey 2003. Table 1 shows that there were 2268 lecturers in the four universities. Copies of the questionnaire were distributed to 600 respondents but 442 were completed and returned, as shown in Table 2 below. No of Res.

European Journal of Social Sciences - Volume 2, Number 1 (2006) Table 2: The sample size Universities Number Sample fraction FUTA 35 11% OAU 212 21% OOU 61 11% LAUTECH 134 36% Total 442 20% Source: Field Survey 2003. Research Instrument A two part, twenty-one item, self - administered questionnaire was the main instrument used. As the questionnaire had never been used previously, its face and content validities were ensured by experts in the field of organization behaviour and thereafter pretested, yielding a reliability coefficient of 0.91. Part A of the instrument provided demographic information of respondents. Six classification data variables were tested using a nominal scale of measurement. Part B contained a number of statements on job motivation (the explanatory or independent variable) and the extent to which these motivational factors motivate lecturers’ continued stay on the job. The type of ordinal scale used is a five point Likert-type rating scale. The dependent variable-voluntary labour turnover between 1993 and 2002 was measured using the U.S labor department formula: Number of employees that left during the year x 100 Total number of employees at mid. year Results and discussion of results Descriptive statistics Table 3 (on page 17) provides descriptive statistics of part A of the questionnaire (classification data). From the table, it is evident that the majority of respondents (79%) fall in the 30-49 age categories. The majority of the respondents (83%) were male, which is representative of the demographics of the male/female ratio of university lecturers in Nigeria. In all, there were 2268 lecturers in the four sampled universities, 1902 (84%) were male while 366 (16%) were female (Ologunde 2003). The majority of respondents were married (85%), while only 15% were not married. It was also discovered that majority of the respondents (78%) were recently employed showing that most of the old hands have left probably because of poor motivation. This also corroborates the fact that 59% of the lecturers were in the junior cadre (L II and below) being recently recruited. Table 4 (on page 18) provides descriptive statistics of part B of the questionnaire. The measure of central tendency used was the analysis of the mean values of the motivational factors. The lowest mean scores were (1.85), indicated by welfare and 1.89 by work environment, while the highest mean score was (2.61) by challenging job. The measure of dispersion used was the standard deviation (SD). The lowest SD (0.915) for work environment, 0.929 for welfare and 0.940 for salary indicated that respondents did not vary too much in their responses regarding these factors. The highest SD (1.28) for domestic reasons indicated that respondents varied in their responses towards this factor. All the motivational factors examined scored below 70%. Their adequacy in keeping lecturers on their job was therefore generally low and hence hypothesis 1 was accepted. Table 5 (on page 18) shows the calculated voluntary quits level in the sampled universities. It is observed that the turnover rate was relatively higher between 1993 and 1999 in all the sampled universities. The reason for this cannot be far fetched from the increase in salary in 1999 that saw 7

European Journal of Social Sciences - Volume 2, Number 1 (2006)<br />

Table 2: The sample size<br />

Universities Number Sample fraction<br />

FUTA 35 11%<br />

OAU 212 21%<br />

OOU 61 11%<br />

LAUTECH 134 36%<br />

Total 442 20%<br />

Source: Field Survey 2003.<br />

Research Instrument<br />

A two part, twenty-one item, self - administered questionnaire was the main instrument used.<br />

As the questionnaire had never been used previously, its face and content validities were ensured by<br />

experts in the field of organization behaviour and thereafter pretested, yielding a reliability coefficient<br />

of 0.91. Part A of the instrument provided demographic information of respondents. Six classification<br />

data variables were tested using a nominal scale of measurement. Part B contained a number of<br />

statements on job motivation (the explanatory or independent variable) and the extent to which these<br />

motivational factors motivate lecturers’ continued stay on the job. The type of ordinal scale used is a<br />

five point Likert-type rating scale. The dependent variable-voluntary labour turnover between 1993 and<br />

2002 was measured using the U.S labor department formula:<br />

Number of employees that left during the year x 100<br />

Total number of employees at mid. year<br />

Results and discussion of results<br />

Descriptive statistics<br />

Table 3 (on page 17) provides descriptive statistics of part A of the questionnaire (classification<br />

data). From the table, it is evident that the majority of respondents (79%) fall in the 30-49 age<br />

categories. The majority of the respondents (83%) were male, which is representative of the<br />

demographics of the male/female ratio of university lecturers in Nigeria. In all, there were 2268<br />

lecturers in the four sampled universities, 1902 (84%) were male while 366 (16%) were female<br />

(Ologunde 2003). The majority of respondents were married (85%), while only 15% were not married.<br />

It was also discovered that majority of the respondents (78%) were recently employed showing that<br />

most of the old hands have left probably because of poor motivation. This also corroborates the fact<br />

that 59% of the lecturers were in the junior cadre (L II and below) being recently recruited.<br />

Table 4 (on page 18) provides descriptive statistics of part B of the questionnaire. The measure<br />

of central tendency used was the analysis of the mean values of the motivational factors. The lowest<br />

mean scores were (1.85), indicated by welfare and 1.89 by work environment, while the highest mean<br />

score was (2.61) by challenging job. The measure of dispersion used was the standard deviation (SD).<br />

The lowest SD (0.915) for work environment, 0.929 for welfare and 0.940 for salary indicated that<br />

respondents did not vary too much in their responses regarding these factors. The highest SD (1.28) for<br />

domestic reasons indicated that respondents varied in their responses towards this factor. All the<br />

motivational factors examined scored below 70%. Their adequacy in keeping lecturers on their job was<br />

therefore generally low and hence hypothesis 1 was accepted.<br />

Table 5 (on page 18) shows the calculated voluntary quits level in the sampled universities. It is<br />

observed that the turnover rate was relatively higher between 1993 and 1999 in all the sampled<br />

universities. The reason for this cannot be far fetched from the increase in salary in 1999 that saw<br />

7

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