High intensity | >60% of recruited women attending two antenatal classes | or | >80% of recruited women attending one antenatal class |
Moderate intensity | >50% of recruited women attending two antenatal classes | or | >65% of recruited women attending one antenatal class |
Low intensity | >40% of recruited women attending two antenatal classes | or | >50% of recruited women attending one antenatal class |
“No intervention” | 0–40% of recruited women attending two antenatal classes | or | 0–50% of recruited women attending one antenatal class |