The a n a ly s is so fa r has been in the form o f c r o s s - c la s s ific a tio n o f data which id e n t if ie s the r e la tio n s h ip between each fa c to r and f e r t i l i t y . On the o th e r hand, a m u ltiv a r ia te a n a ly s is helps to fin d out the net e ff e c t o f each fa c to r on f e r t i l i t y and how w e ll the p r e d ic to r v a ria b le s e x p la in the v a r ia tio n in the dependent v a ria b le (S rin iv a s a n , 1979: 98-100). M u ltip le c la s s if ic a t io n a n a ly s is (MCA), one o f the
m u ltiv a r ia te a n a lysis techniques, w i l l be used in t h is s e c tio n to examine the net e ffe c t o f each fa c to r on f e r t i l i t y .
The MCA techniques were o r ig in a lly developed by Yates in 1934 and were fu r th e r elaborated by Anderson and B ancroft in 1952 (UN, 1979:
120). Andrews, e t a l . , (1973) have thoroughly documented the computer
programs f o r these techniques. This a n a lysis uses the MCA program in the S t a t is t ic a l Package fo r the S o c ia l Science (SPSS), described by Kim and Kohout (1975: 409-433). The a n a ly s is has been done using data f o r the t o t a l sample because one o f the lim it a t io n s o f MCA i s th a t i t re q u ire s a considerable number o f cases (Andrews, e t a l . , 1973: 17-27).
The v a ria b le s included in the a n a ly s is are woman's education, age a t marriage and type o f marriage as independent v a ria b le s w ith the mean number o f c h ild re n ever born to ever-m arried women as the dependent v a ria b le . Woman's c u rre n t age has been used as a c o v a ria te because f e r t i l i t y i s re la te d to woman's age. Place of residence and husband's education and occupation have been excluded in t h is a n a lysis because the e a r lie r ta b u la tio n s , in which t - t e s t s were a p p lie d , have shown th a t these v a ria b le s have no s ig n if ic a n t e ff e c t on f e r t i l i t y .
The a n a ly s is o f variance in Table 3.7 in d ic a te s th a t age a t marriage i s the only v a ria b le which has a s ig n if ic a n t e ff e c t on f e r t i l i t y and th a t no two-way in te r a c tio n is s ig n if ic a n t. The m u ltip le c la s s if ic a t io n a n a lysis in Table 3.8 in d ic a te s th a t age a t m arriage has a very strong inverse re la tio n s h ip w ith f e r t i l i t y . A fte r a d ju s tin g f o r the e ffe c ts o f the o th e r independent v a ria b le s and the c o v a ria te , women who m arried before age 18 years had an average o f 4.3 c h ild re n compared w ith an average o f 3.7 c h ild re n born to women who married a t age 18 or h ig h e r. This i s c o n s is te n t w ith the re s u lts o f the a n a ly s is o f the
TABLE 3.7
ANALYSIS OF VARIANCE OF COVARIATE, MAIN