Table 2.
Seasonal variations in energy (MJ/WF/day) and thiamin (mg/4.2 MJ) intakes in the study compounds NBC and BBC through one year 1,2,3.
| Study period | Weather | Energy (MJ/WF/day) | Thiamin (mg/4.2 MJ) | ||
|---|---|---|---|---|---|
| NBC | BBC | NBC | BBC | ||
| March/April | Dry | 3.0 (0.2) a | 3.1 (0.5) | 0.29 (0.05) a,b | 0.25 (0.04) a |
| May/June | Dry | 3.0 (0.1) a,b | 3.1 (0.3) | 0.22 (0.05) a,b | 0.22 (0.08) a |
| July/August | Wet | 2.5 (0.1) c | 2.9 (0.3) | 0.37 (0.30) a | 0.12 (0.04) b |
| September/October | Wet | 1.4 (0.1) d,x | 3.0 (0.1) y | 0.16 (0.01) b,x | 0.09 (0.02) b,y |
| November/December | Dry | 3.3 (0.1) b | 3.3 (0.8 | 0.62 (0.05) b | 0.53 (0.07) c |
| ANOVA; P-value | 0.001 | 0.791 | 0.003 | <0.001 | |
| Yearly average | 2.7 (0.7) | 3.1 (0.4) | 0.33 (0.21) | 0.25 (0.17) | |
1 Values were geometric mean intakes (SD) for four days observation except in BBC in September/October when n = 3. WF was the unit of measurement by which all subjects were apportioned their intake from the communal feeding bowl;
2 NBC designates a compound with no beriberi in 1988 while BBC had cases of beriberi in that year;
3 Data were log transformed before repeated measures analysis of variance (ANOVA) and subsequent group tests; seasonal differences (a,b,c) and compound differences (x,y) are shown where mean values do not share a common superscript letter (P < 0.05, LSD test). Differences between compounds within study periods are shown by unlike superscripts (x,y; independent t-tests).