// choices
     if($wpdb->get_var("SHOW TABLES LIKE '".CHAINED_CHOICES."'") != CHAINED_CHOICES) {        
			$sql = "CREATE TABLE `" . CHAINED_CHOICES . "` (
				  `id` INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
				  `quiz_id` INT UNSIGNED NOT NULL DEFAULT 0,
				  `question_id` INT UNSIGNED NOT NULL DEFAULT 0,
				  `choice` TEXT,
				  `points` DECIMAL(4,2) NOT NULL DEFAULT '0.00',
				  `is_correct` TINYINT UNSIGNED NOT NULL DEFAULT 0,
				  `goto` VARCHAR(100) NOT NULL DEFAULT 'next'
				) DEFAULT CHARSET=utf8;";
			
			$wpdb->query($sql);
	  }